Coolrunner Bicycle Handle Bar Mushroom Grips BMX for Boys and Girls Bikes (Pink 2) Made of high quality soft rubber, comfortable and no-slip. Product Size: Length about - 90mm and inner dia - 22.2mm. Universal for most standard bicycles with handlebars outer diameter between 22-23 mm. Shock absorbing and ergonomic design. Keep grips tight,no worry loose or fall down. Classic style and lovely color with ridged turbo shape. Easy to install: Please brush little Soap water, Detergent water or Car wax as Lubricant on your handle. Then it will be installed easily and quickly.