Schwinn Bike Repair Tool Kit, Multi-Purpose for Bicycle Repairs, Easy-to-Carry Tool Kit, Portable and Convenient Design Bicycle Essentials Easy Road Riding

Don't think twice if you need one.

A very necessary tool to have for anyone who bikes regularly. Perfect size and small enough to easily carry.

I've only had to use this once at the time of this review, but after some experimentation I was successful in un- and re-linking the chain. I used this one a single-speed 1/8" chain. I was concerned about damaging the chain based on other comments posted, but this wasn't an issue for me. It's not rocket science--place the chain in the device, center the pin with the punch and turn the crank until the pin is displaced 90% of the way through (ensure to not push the pin completely out). If it punch isn't on the pin and it doesn't appear to be moving with the crank, then STOP, back it out, adjust and retry.I really wish I had one of these growing up and relied on my bike to get me back and forth to school, where we relied on a punch and hammer to dislodge the chain's pins! That was about as accurate as throwing a bowling ball at needle and thread to get it threaded.

I have a great 21-speed bike that I got for a very low price. As such, I did not want to spend more money on the maintenance tools for the bike than I did on the bike itself. This Schwinn Bicycle Chain Tool fit the bill, but I was concerned by the negative reviews. I took a risk on it anyway and I'm glad I did. The chain tool works just fine on my older KMC chain as well as my new SRAM PC-830 (6/7/8 speed) chain. A few noteworthy points:1. The Amazon page doesn't give much details on the tool, so here's what it says on the packaging: 'For use on 1/2" x 1/8" single speed and 1/2" x 3/32" multi-speed chains'. I don't have a 9 or 10-speed chain to test it on, but these chains should still have a 3/32" internal width. I can only say for certain that it worked fine on my KMC and SRAM 6/7/8 speed chains.2. The rubber ends do come off too easily. When the ends come off, the bar used for twisting can slide out. This is great for disassembling the tool so that it will fit more readily into a bike bag, but can be annoying if the bar slips off while the tool is in use.3. The bottom handle can be twisted off as well. Once again, this is great if you plan to disassemble the tool, but can be annoying when the handle loosens during use. If you don't plan on disassembling this tool (it's pretty small as it is), consider gluing this bottom handle and the rubber ends in place.4. The black knob has a retracting internal pin. You want to tighten this knob right up against the chain to brace it as the link pin gets pushed through. Other chain tools may not have/need this knob.5. The grooves that hold the chain in place seems a bit too long. They are supposed to fit between the rollers like the teeth of your bike cogs. With this tool, in order for the link pin to align, the main roller actually has to be pushed down slightly. This means the chain ends up forming a very slight "U" shape. The grooves could also be higher to prevent the chain from slipping. Not a big deal - just keep the chain pressed down with your thumb.6. I couldn't make much sense of the instructions on the package. So my steps are as follows (see photos): (A) Place the chain onto the second set of grooves (the one closer to the black knob). The grooves should fit between the plates of your chain. (B) Tighten the black knob so that it pushes against the chain. (C) Twist the handle until the chain tool pin aligns with your link pin. The pins may shift slightly, so position it properly as the pins come together. (D) Once the pins are aligned, use your thumb to hold the chain in place. (E) Twist the handle until the link pin is pushed most of the way out. Do not push the link pin entirely off your chain, otherwise it will be difficult (but not impossible) to push the pin back in. (F) When the link pin is only hanging onto the last outer plate, remove the chain from the tool. Flex the chain back and forth until the chains are uncoupled.This chain tool is not perfect, but it is more than capable of doing its job. If you don't need to break chains all that often (especially when you have master links), then this tool should be fine for changing the length of your chain or making a quick repair on the road. But if you don't mind spending more than 3 times as much on a Pedro's or Park Tool chain tool, you'll probably get a better tool.

Actual garbage. The threads weren't even cleaned, it cut me 30 seconds into changing my kid's chain. Then the threads stripped entirely after popping a single pin. Spend a few more bucks for something that will actually work.

The size is just write for carrying on a bike. It is sturdy, versatile and easy to use. Also, a good value.

I have not used this yet, but I put it inside the Schwinn handlebar bag. It's a great value for the money!

Well made. Quality is appreciated.