These are 2.5mm E-Clips from DuraTrax. / / FEATURES: Durable black steel construction. / Can be used on any 1/10 or 1/8 scale kit. / Goes on a 2.5mm shaft. / / INCLUDES: (10) E-clips / / SPECS: Size: 2.5mm / TN-10/01 / ir/kh / kr2/27/03