About this item 6 Hole Keyed Hub Shaft Axle Adapter with 1″ Keyway Dual 6 Holes Hub Shaft Axle Adapter Sprocket, suitable for six hole sprocket with hole pitch of 48MM and 50MM 6 Holes Hub Shaft Axle Adapter Sprocket with 1″ Keyway Set screw and Key included Hub Made of steel. Connecting Screws & Nuts are Stainless Steel Center pillar in Hub Adapter and Chain Sprocket is 1.38” 35mm diameter













