Bike Chain Kit, Single/6/7/8/9/10/11/12 Speed Multi-Function Bike Mechanic Repair Kit, Chain Breaker and Bike Link Plier with Hook and 6 Pairs Bicycle Buckle, Reusable (6/7/8 Speed Bike Chain Kit)

The chain thickness measured 6.1-6.3 mm. I think the spec for this 10 speed chain is 6.0 mm. This thickness had no effect on my derailleur to easily shift gears. In fact it only took a few very minor adjustments to smoothly run thru all the gears. The pin removal tool almost maxed out while removing the pins on this new chain. It was way too fragile and it was very apparent to me that this tool was incapable of pin removal on my old chain. In fact it took quite a few good hammer blows using a punch to remove the old pins. Easy to see why folks are destroying the removal tool.

The chain an tools came quickly. Everything seems to bed or good quality chain and tools. I took 5 links from the chain to adjust for the size I needed 20 speed long throw rear derailleur. Link remover worked perfect. Master links, several included were perfect and included locking tool was east and straight forward too. Rode the bike for 20 miles after installation. It was smooth and gears changed easily. Highly recommend. Durability not yet known.

This was easy to use. The only reason it did not get a 5 is because the the nipple on the device to break the chain kept bending and I would have to stop remove it and bend it back into place so it could be used. Other than that I completed the replacement and everything works.

I was really disappointed with the Bike Chain Kit, Single/6/7/8/9/10/11/12 Speed Multi-Function Bike Mechanic Repair Kit. While it comes with a variety of tools and accessories, the quality just doesn’t live up to expectations. The chain breaker tool is flimsy and doesn’t feel sturdy when using it, which made me nervous about breaking or damaging my chain. The bike link plier with hook didn’t work as smoothly as I had hoped, and it was difficult to use to properly connect or remove links.The included 6 pairs of bicycle buckles are nice to have, but the quality of the buckles was also lacking. After a few uses, I found them difficult to latch properly, which caused issues during my bike repairs. The overall construction of the kit feels cheap, and I didn’t feel confident in the longevity of the tools.For the price, I expected better quality and durability. This kit might be fine for occasional, light use, but I wouldn’t recommend it for anyone looking to do frequent or serious bike repairs. There are definitely better options available for those in need of a more reliable, well-made bike repair kit.

I purchased the Single, 6/7/8/etc speed kit in order to replace a chain on an ebike that doesn't have a multi-speed chain but it does have a chain tensioner that's really only there to assist with maintenance on the back wheel. Due to circumstances, it decided it wanted to work as a derailleur instead so it's constantly pushing my chain onto the outer section of the motor hubI really only bought this kit for the chain, the chainbreaker tool, and the master links. I only used those parts of the kit. I did not use the other bits that help spacing the chain or holding it in place while working on it.And those parts of the kit worked like an absolute charm! I was able to quickly (Less than 10 minutes) delink my current chain and pull it off, remove my chain tensioner (using my own hex wrench not part of this kit) put the new chain on, measure it by eye, shorten it a little using the chain breaker so it wouldn't have excessive slack, put the master links in place and finish this project that has been bothering me for months!The tool some people show in pictures and video look different from the one I received as mine is all black and there isn't a slide-over handle but rather it screws into the bottom of the tool. It's much sturdier than I expected given some of the poor reviews. The pin may look misaligned as you crank the handle, this is perfectly normal and it is why you need to make sure you have the chain where it needs to be! Universal rule: Outer section (there are two /_\ on the tool.) is what you want to use for removing links or putting them back together. The inner section that's closest to the handle is what you use for loosening the chain if you accidentally make a link too tight so it no longer swivels freely. Unless you are loosening a chain, DO NOT use the inner section closest to the handle. A neat little function of this tool is the knob on the outside of it. The last tool I used did not have one of these and it made it harder to line up the pin while keeping it stable (turning the crank without that extra piece clamping it could cause the chain to shift in the tool) and that old, unrelated tool ended up ruining my chain by bending the outer sections of the chain inwards, hence my reason for getting a chain with the new tool kit. Once you get the chain where you need it to be, turn that knob and it will clamp the chain in place and it makes things so much easier.I am not 100% bicycle maintenance savvy, but this kit saved me a great deal of hassle and money. If I need to replace a chain in the future, or I just want a backup tool and spare chain, I'd definitely buy this one again!Small edit: The handle on the tool has a little storage space inside it. There was a replacement pin for the tool inside.

The kit works, but the quality is lacking. It was nice to learn how to change my own chain. Since the tools were breaking upon their first use, had to use some other tools to assist with breaking the old chain and sizing the new one. Unfortunately, this chain broke in only a year. The original chain lasted over six years with similar use.

I converted a Lectric XP to single gear with this kit. I can't attest to the link pliers or the master links, as I haven't used those. But, I will say that both the chain breaker and the chain itself worked out great for my purposes!No issues with the chain breaker...and that's with me both breaking the chain, and also adding a link later when I realized I shortened it too much. One thing to do before using the chain breaker, unscrew the turn thingie, and screw the pin in tight! All the people posting reviews with the pin either bent or broken off, I'll bet the farm the pin was loosely screwed in, and therefore wasn't making solid 90 degree contact with the chain rivet it was trying to push out. So tighten that pin, and occasionally check on it because the mere function of pushing rivet out loosens it.The chain is perfectly fine as well btw, or at least I have no issues as of yet to report. I'm very happy with this product, and can recommend it.

Excellent, very good quality, I recommend it 10/10