All new Insight Chain Tensioner were designed to work with todays longer dropouts, so you can adjust your rear wheel to work in any position.

Features:
Forged aluminium body
10mm (3/8″) or 6mm dual axle holes
1 adjust screw bolt

Weights : 10mm : 56 g / 1,97 oz
6mm : 57 g / 2 oz

Offered in 5 Colors : Black, White, Red, Blue, Polished