Shimano & SRAM compatible single speed conversion kit with ramped spacers. Black anodized. Features: Compatible with Any 1/2 x 1/8" chain (this includes BMX and Track chains) and any 8 or 9 speed chain Not compatible with 10 or 11 speed chains Fits Shimano freehub bodies except deep spline 10-speed Specifications: Type: Single Speed Conversion Kit Speeds: Single Speed (1/8") Drive Type: Shimano/SRAM Color: Black Weight: - Includes: (2) 9mm angled spacers (6) 3mm spacers (2) 1mm shims (1) Lockring (1) 16T cog