Features and Benefits:•Extremely slim design with a soft, ergonomic grip zone for easy work even in very confined spaces•Safe socket lock via push button, convenient direction change thanks to the reversing lever•Plastic coating protects surfaces from damage•This ALLIGATOR straight TR 543 nickel plated valve is particulary suitable for light metal alloy rims. They fit 9.7 mm ( 0.382" to 0.394") valve rim holes and measure 2.31 " in length.