1 Bike Tool Kit: Made of high quality steel with durable and precise parts. Includes bike chain pliers, bike chain tool, bike chain wear indicator included. Very practical. High precision bicycle chain gauge: chain control, quick and easy measurement of wear. Made of hardened steel, two precision screens of 0.75 and 1.0. 0.75 is the official wear limit for chain use, 1.0 for use with steel sprockets. Professional chain puller: Chain Separator - Easy to cut, easy to put back chain, unique groove on the top to easily see how far the pin has been extracted and remove the cut chain thanks to the tool pin. 2-in-1 link pliers: Bike chain link pliers, ergonomic handle for comfort and ease of use. Compatible with GANG 7, 8, 9, 10, 11, 12... The bottom of the clip has a clasp, close the clasp to save space. Multifunction: Small and sturdy, easy to carry, can be used as a travel tool kit to solve most bicycle problems. Suitable for Dutch bikes, trekking bikes, road bikes, city bikes, mountain bikes and racing bikes etc.