TOPCABIN Bike Handlebar Grips,Ergonomic Design Bicycle Handlebar Grips Widen Holding Surface Rubber Bike Grips with Aluminum Lock Bicycle Grips Handlebar Cover for Bike Mountain Road MTB Suitable for Bike Handlebars with Outer Diameter between 20-23 mm,Universal for Most Bicycles . Produc Length: 130 mm Ergonomic design Widening the grips' the bearing surface of the hand Material: High quality rubber,comfortable and no-slip The aluminium inner ring keep grips tight,no worry loose or fall down,The design succeeded in cutting the pressure from long-riding down BUY WITHOUT WORRY: Each "TOPCAIBN" Goods comes with a 12-month warranty and 100% Return and replacement service guarantee(and if it is not damaged by human factors). If you have any dissatisfaction, please email to our, We will do our best to you Solve the problem and Provide satisfactory service.