These are 2x10mm Pins from HPI Racing. FEATURES: Plain silver steel construction. Solid, tubular shaped. These spring pins usually retain pulleys, drive hubs, or other parts on shafts. Can be used on other brands of R/C vehicles requiring a 2mm pin. YOU WILL RECEIVE: (10) Pins SPECIFICATIONS: length: 10mm (0.39") diameter: 2mm (0.08") cmc 01/19/02 ir/kh kr4/8/03 &