Grit Yeh Yeh Yeh Bars 21.6" High by 20.0" Wide 4130 Chromoly bars with 2 degree backsweep and 2 degree upsweep Unidirectional, light, super strong, designed for wrist comfort Fits most major pro scooter brands including Grit Scooters and Razor Inside diameter of 1 1/8 inch and outside diameter of 1 1/4 inch. Requires 1 1/4 inch clamp.