The Profile Racing Elite Freewheel is one of the best freewheels money can buy. It features two fully sealed Enduro bearings, a hardned S7 Tool Steel outer cog driver, Titanium threaded inner body driver. Six pawls with 140 points of engagement per revolution. Fits 3/32" or 1/8" chains. Standard 1-3/8 x 24 threaded (will fit most standard hubs). Tool sold separately.