Variator Outer Diameter:89mm Variator Inner Diameter:20mm Bush Size: O/D:20MM; I/D:14mm; Length:38mm Roller Sets Weight: 6.5g Roller Weight Size: 16×13 mm Parts Details for GY6 50cc High Performance Variator Set Glixal GY6 50cc 16X13 Roller WeightsMade of Copper Core, Hard to Corrode.High Temperature Resistant and Wear-resisting Nylon Material ShellComes with 6.5 Gram Weight Will Bring You Balanced Performance. It is Friendly to Most Users.Racing Red Color Rollers Are Far Superior to Your Original Roller Weights Glixal GY6 50cc Racing Variator SlidesThe Slide Pieces in the Variator Are Equally As Important As the Rollers. It is Highly Recommended to Change the Slide Pieces to Coincide with the Rollers.Slides Are Made of the Same Abrasion-resistant Nylon As the Glixal Roller Weights, Which Promises a Long Life.Racing Red Color Varia