--- product_id: 125534947 title: "7Pcs 300mm Extra Long Twist Drill Bits Set ( 4-12mm）+ 9Pcs Woodworking Drill Bit Depth Stop Collars Ring Locator (3-16mm)，for Wood Hole Cutter Drilling DIY Plastic" brand: "qisf" price: "1.25 OMR" currency: OMR in_stock: false url: https://www.desertcart.com.om/products/125534947-7pcs-300mm-extra-long-twist-drill-bits-set-4-12mm store_origin: OM region: Oman --- # Precision depth control 300mm extra-long reach High-carbon steel durability 7Pcs 300mm Extra Long Twist Drill Bits Set ( 4-12mm）+ 9Pcs Woodworking Drill Bit Depth Stop Collars Ring Locator (3-16mm)，for Wood Hole Cutter Drilling DIY Plastic **Brand:** qisf **Price:** 1.25 OMR **Availability:** ❌ Out of Stock ## Summary > 🔧 Drill deeper, drill smarter—own the precision edge! ## Quick Answers - **What is this?** 7Pcs 300mm Extra Long Twist Drill Bits Set ( 4-12mm）+ 9Pcs Woodworking Drill Bit Depth Stop Collars Ring Locator (3-16mm)，for Wood Hole Cutter Drilling DIY Plastic by qisf - **How much does it cost?** 1.25 OMR with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.com.om](https://www.desertcart.com.om/products/125534947-7pcs-300mm-extra-long-twist-drill-bits-set-4-12mm) ## Best For - qisf enthusiasts ## Why This Product - Trusted qisf brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Built to Last:** Hardened high-carbon steel resists wear and breakage under pressure. - • **Secure & Stable:** Collars grip the bit diameter firmly without damaging the shaft for consistent performance. - • **Extended Reach Mastery:** Extra-long 300mm drill bits for those hard-to-reach projects. - • **Precision Depth Control:** Stop collars ensure exact hole depth every time—no guesswork. - • **Versatile DIY Essential:** Perfect for wood, plastic, aluminum—your all-in-one drilling solution. ## Overview The QISF 7Pcs 300mm Extra Long Twist Drill Bits Set includes 7 high-carbon steel drill bits (4-12mm) and 9 adjustable depth stop collars (3-16mm) designed for precise, controlled drilling in wood, plastic, and soft metals. Engineered for durability and accuracy, this set empowers professionals and DIYers to achieve flawless hole depths with extended reach and secure bit stability. ## Description 9Pcs Woodworking Drill Bit Depth Stop Collars Ring Positioner Locator Setscrew type collar will not damage bits. Positively locks anywhere along the bit. Hardened and Tampered. High Carbon Steel Drills. Sizes:3mm 4mm 5mm 6mm 8mm 10mm 12mm 16mm.Includes allen wrench 7PCs Extra Long Twist Drill Bits 4-10mm for Wood Hole Cutter Drilling This drill bits set are extra long and sharp, made of hardend material , designed with three sharp positoning points , ideal for working on thick wood and drilling deep holes. High-carbon steel, hardened by quenching heat, tough and durable. Great for most drilling jobs and soft materials such as aluminum, wood, plastics et. Specifications: Material： High carbon steel Drill diameter : 4mm，5mm，6mm，7mm，8mm，10mm，12mm Drill length ： 300mm Package: 8 x Drill Bit Depth Stop Collar (3-16mm) 7Pcs 300mm Extra Long Twist Drill Bits (4-12mm) 1 x Hex Wrench 1. Please allow 1-3mm error due to manual measurement. Thanks for your understanding. 2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard. ## Features - 【Perfect Tools Set】--- Extra Long Twist Drill + Stop Collar，accurately control the depth of a hole you are drilling.Great for drilling depth when a precise measurement is needed for hole depth; Designed to hold your drill bit securely in place and grip the entire diameter of your drill bit without the screw ever touching the shaft. - 【Wide Applocation】--- Great for most drilling jobs and soft materials such as aluminum, wood, plastics et. - 【Easy to Use】--- Simply choose the appropriate size drill bit and stop collar, slide the collar on the bit and set the required depth with a ruler or depth gauge (not included), then tighten the collar screw to the drill bit. - 【High-Carbon Steel】--- Both made of High-carbon steel,hardened by quenching heat, high hardness and durability. - 【Package】--- 7 Pcs 300mm Extra Long Twist Drill Bits(4-12mm) + 8 x Drill Bit Depth Stop Collar(3-16mm) + 1 x Hex Wrench ; *** Because the drill bit is too long (Easy to break or deform), please pay attention to the speed and safety when using *** ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07PS6TDDP | | Best Sellers Rank | 294,032 in DIY & Tools ( See Top 100 in DIY & Tools ) 2,374 in Drill Bit Sets | | Brand | QISF | | Customer Reviews | 3.6 3.6 out of 5 stars (334) | | Cutting Angle String | 118 Degrees | | Cutting Diameter | 12 Millimetres | | Finish Types | Steel | | Manufacturer | QISF | | Manufacturer Part Number | NECALON | | Material | High Carbon Steel | | Minimum Bore Diameter | 3 Millimetres | | Model Number | NECALON | | Number of Flutes | 2 | | Number of Packs | 2 | | Number of Pieces | 16 | | Point Style | Split Point | | Set Name | True | | Shank Type | Hex | | Surface Recommendation | Wood | | Tool Flute Type | Spiral | | UPC | 710654692291 | | Unit Count | 1 count | ## Product Details - **Cutting angle string:** 118 Degrees - **Cutting diameter:** 12 Millimetres - **Finish type:** Steel - **Material:** High Carbon Steel - **Shank type:** Hex ## Images ![7Pcs 300mm Extra Long Twist Drill Bits Set ( 4-12mm）+ 9Pcs Woodworking Drill Bit Depth Stop Collars Ring Locator (3-16mm)，for Wood Hole Cutter Drilling DIY Plastic - Image 1](https://m.media-amazon.com/images/I/415rxyuV8JL.jpg) ![7Pcs 300mm Extra Long Twist Drill Bits Set ( 4-12mm）+ 9Pcs Woodworking Drill Bit Depth Stop Collars Ring Locator (3-16mm)，for Wood Hole Cutter Drilling DIY Plastic - Image 2](https://m.media-amazon.com/images/I/51JipNJSB6L.jpg) ## Frequently Bought Together - QISF 7Pcs 300mm Extra Long Twist Drill Bits Set (4-12mm）+ 9Pcs Woodworking Drill Bit Depth Stop Collars Ring Locator (3-16mm)，for Wood Hole Cutter Drilling DIY Plastic - Bosch 2607017034 Professional 7-Piece Robust Line Brad Point Drill Bit Set (for Wood, Accessories for Drill Drivers) , Black/Silver , 14.1 x 8.3 x 2 cm --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.com.om/products/125534947-7pcs-300mm-extra-long-twist-drill-bits-set-4-12mm](https://www.desertcart.com.om/products/125534947-7pcs-300mm-extra-long-twist-drill-bits-set-4-12mm) --- *Product available on Desertcart Oman* *Store origin: OM* *Last updated: 2026-11-10*