Enduro 6806 Sealed Cartridge Bearing Description: Enduro 6806 Sealed Cartridge Bearings provide maximum corrosion resistance using 440C stainless steel material for each bearing race. Stainless steel is a good alternative in constant wet conditions, or where sweat becomes a problem such as headset bearings. Enduro Bearings uses LLB type seals and CRC Marine Grease in these bearings to additionally water proof against the elements. Features: Direct replacement bearing for BB30 and PF30 type BBs (including BB386) 440C stainless steel balls and races Specifications: Manufacturer Number: 6806 Material: Steel Dimensions: 30mm x 42mm x 7mm (Inner Diameter, Outer Diameter, Thickness)