DescriptionCertification : CEMaterial: aluminum alloyCategory: Oil-free engine head accessories below 980w 2 pieces 550/750 cylinder head seals 4 pieces 550/750w conduit seals 2 pieces550/750w valve plate sealing ring suitable for cylinder outer diameter 69 leather cup thickness 0.8mmCylinder outer diameter 69, height 24mmCylinder outer diameter 69, height 24.5mmCylinder outer diameter 69, height 25.8mmCylinder outer diameter 69, height 47mmCylinder outer diameter 69, height 47.5mm1100w and above oil-free engine head accessories1100/1500w cylinder head sealing ring 1100/1500 conduit sealing ring 2 pieces1100w valve plate sealing ring 2 pieces 1500w valve plate sealing ring suitable for cylinder outer diameter 69 leather cup thickness 1mmCylinder outer diameter 69, height 49mmCylinder outer diameter 69, height 50mmThe thickness of the leather cup suitable for the outer diameter of the cylinder is 75 1mmCylinder outer diameter 75, height 35.6mmCylinder outer diameter 75, height 47.5mmCylinder outer diameter 75, height 48.5mm 550/750/1100w pressure plate screw OT1500w pressure plate screw