Available base models: 60**/618**/619**/62**/63**/160** Available machining dimensions: Inner diameter 80mm / Outer diameter 1500mm Available product accuracy grades: P0, P6, P5, Z1V1, Z2V2 Material: Chrome steel / stainless steel/ hybrid ceramic / si3n4 ceramic / zro2 ceramic Available retainer types: Machined Brass Retainer / Steel Sheet Stamped Retainer Available product structure: Open Type / With Dust Cover Type (Z , 2Z) / With Seal Ring Type (RS , 2RS)