●11-in-1 chain tool bicycle set: CEVILLAE bicycle chain set for bicycle repair. Includes 1 x chain rivet/bicycle chain rivet pliers, 1 x chain tool pen, 1 x chain hook, 1 x chain lock pliers, 1 x chain gauge bicycle tool, 5 x pairs of bicycle chain rivets for 6-7-8, 9, 10, 11, 12 speed chain and 1 x user manual (English language not guaranteed). ●7-in-1 high-precision chain wear gauge multi-tool: this chain wear indicator is made of 304 stainless steel material with laser cutting CNC finishing, quick and easy measurement of wear, this chain wear chain gauge is not only a chain wear tool, but also a chain tool for hooking the chain, a dissamble Presta valve tool, screw diameter measuring tool. ideal ideal for chain and bicycle Tyre repair tool. ●Unique bicycle chain riveter: compared to normal bicycle chain rivet tool, this bicycle chain tool is made of high-carbon steel and is durable, and it adopts high-precision cutting technology to keep the stuck position more precisely, so it does not come with a mounting nut, you do not need to adjust a nut to fix the chain, the screw handle is plus length to 89 mm, energy-saving, easy to break. ift available as a replacement. ●2-in-1 chain pliers: chain link remover and connector, ergonomic handle for comfort and ease of use. Compatible with 6, 7, 8, 9, 10, 11, 12 GEAR bikes. Non-slip, clear and medium size handle to increase friction, comfortable to handle and easy to use, which help you remove the chain easily and comfortably. Chain lock pliers of the pliers handle with a clamp, close the clamp for small size for storage ●5 pairs of different speed chain magic buckles: This pack of bicycle chain tool set with 5 pairs of speed chain buckles, 1 x 6-7-8 speed, 1 x 9 speed, 1 x 10 speed, 1 x 11 speed, 1 x 12 speed, you can install the right chain magic buckles, this bicycle chain set is ideal for touring bikes, road bikes, city bikes, mountains. 2 bikes and bikes and bikes your bicycle chain and extend the service life.