This bike chain checker is a very useful and helpful too for your bike.

Features:
Durable aluminum alloy construction.
Quickly checks chain wear to determine if a chain is good or bad.
Helpful tool for your bike.

Specifications:
Material: Aluminum alloy
Color: Black / Blue / Golden / Red / Titanium (optional)
Length: 13.5cm / 5.3in
Package Size: 16 * 9 * 1cm / 6.3 * 3.5 * 0.4in
Weight: Approx. 50g / 1.8oz

Package List:
1 * Bike Chain Checker