Freewheel 17T 1/8 English Gun Metal Curb Dog X-Gen HD-30

Durable cold forged design - Three pawl design with 30 steps provides engagement every 12 degrees for a smooth and quiet mechanism. 8 Spline removal pattern allows use of standard 4 Prong removal tool. Fits 1/8 chain sizes. Standard thread 1.37 x 24tpi