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🔧 Master the art of perfect circles—because your tabletops deserve precision.
The Jasper Tools 300ProJ Circle Cutting Jig is a professional-grade accessory designed for precision tabletop creation. It offers 184 size options in 1/4-inch increments, covering a wide range from 7 to 52-3/4 inches, and is calibrated for 1/2-inch router bits. Lightweight yet durable, this jig replaces the older model with improved safety and quality, making it an essential tool for serious craftsmen aiming for flawless circular cuts.











| ASIN | B01KG5FC06 |
| ASIN | B01KG5FC06 |
| Best Sellers Rank | #95,097 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #166 in Power Tool Accessory Jigs |
| Brand Name | JASPER PRECISION TOOLS |
| Customer Reviews | 4.6 4.6 out of 5 stars (190) |
| Customer reviews | 4.6 4.6 out of 5 stars (190) |
| Date First Available | 11 October 2016 |
| Global Trade Identification Number | 00673046013008 |
| Included Components | Circle Guide Jig, Set of Screws and Instructions |
| Is Discontinued By Manufacturer | No |
| Item Dimensions L x W | 78.7L x 16.5W centimeters |
| Item Type Name | Jasper 300ProJ Model 300 Pro Router Circle Cutting Jig |
| Item Weight | 620 Grams |
| Item model number | M 300 Pro |
| Line Size | 0.5 Inches |
| Manufacturer | Jasper Tools |
| Manufacturer | Jasper Tools |
| Manufacturer Part Number | M 300 Pro |
| Material Type | Polycarbonate |
| Model Number | M 300 Pro |
| Product Dimensions | 78.74 x 16.51 x 0.51 cm; 620 g |
| Set Name | Jasper 300 XLC Kit |
| Size | 7 to 52-3/4 inches |
| Style | Modern |
| UPC | 673046013008 |
| Unit Count | 1 Count |
C**D
Works great
Hubby just made a 12.5 inch 3/4 inch circle for me. It's perfect. He is going to regret buying this cause I have a list of things I want made! It arrived way ahead of schedule and he is very pleased with it.
L**D
Works great!
This thing worked amazingly well - super easy to set up, instructions clear, cut a perfect circle through 3/4 inch maple boards in 3 passes cleanly
B**Y
Difficult to understand for a beginner.
Sent it back wasn’t what needed.
S**T
Love these jigs
I love this thing. Accurately cutting circles can be a pain, but with this jig, it is simple and very accurate. I bought the smaller jig from this company and it worked so well, so when I needed to make a larger cut circle than it could handle it was a no-brainer. I needed an exact 30-inch diameter cut and using this made it so easy and nailed the cut accurately the first time. As much as lumber costs right now, not having to re-cut something is so valuable. I know there are other jigs like this out there - they may work well too - but I know this one works like a charm.
A**R
Damaged and cheap condition no quality control at all.
this is the second time that I ordered and product arrived damaged. I lost a big client because of this unprofessional behavior plus un professional as well. The other one Jasper 390 product arrived damaged and in cheap condition. and those are the most expensive items in anywhere.
Trustpilot
2 weeks ago
2 days ago