Is it difficult to change the speed of bicycle? Do you feel that it's hard to ride your bike? It is time to change the chain. Our chain is easy to install and fine workmanship. You won't be disappointed.

Features:
The surface is waterproofing.
Made of tensile steel plate which intensity is more strong.
Compatible with Shimano mid or long cage derailleur.
Designed hollow and can reduce the weight.
Suitable for highway or mountains.

Specifications:
Brand: ZTTO
Material: stainless steel
Color: silver
Species: 11-40T 9 speed, 11-42T 10 speed (optional)
Item size:
11-40T 9 speed: 17 * 17 * 4cm / 6.7 * 6.7 * 1.6in
11-42T 10 speed: 17 * 17 * 4cm / 6.7 * 6.7 * 1.6in
Item weight:
11-40T 9 speed: 515g / 1.1lb
11-42T 10 speed: 526g / 1.2lb
Package size:
11-40T 9 speed: 19 * 18.5 * 6cm / 7.5 * 7.3 * 2.4in
11-42T 10 speed: 19 * 18.5 * 6cm / 7.5 * 7.3 * 2.4in
Package weight:
11-40T 9 speed: 632g / 1.4lb
11-42T 10 speed: 613g / 1.4lb

Package list:
1 * Cassette sprocket
1 * Internal angle screw
1 * Screw