Expert Quality, for use with 14.4V and 18V (2.4Ah) Draper Expert Cordless Drills, Impact Drivers and Impact Wrenches. 10.8V (1.1Ah) for use with Draper Expert 10.8V products only. Slide-on pattern for 14.4V and 18V; push-in pattern for the 10.8V. Carton packed.