Top quality screw-on Freewheels for the discerning single speed rider that wants super quick pick-up...High strength Cr-Mo body and cog.,CNC 3/32" Cr-Mo teeth (can accept 3/32 or 1/8" chains).,6 pawls system.,72 point pick-up.,1.37"x 24T Standard R/H threaded.,Body features "EZ-off" 4 dog tool removal slots. ,Black Oxide finished..SpecificationsMaterial Cr-Mo,Chain Compatibility 3/32,Threads 1.37 inch x 24 tpi,Colour Black,Weight 164g (16T), 172g (17T), 176g (18T).