Designed to Work on Single Piston Disc Brakes that Require the Piston to be Rotated Back into the Caliper as well as Pistons that are Not Rotated. Includes two double-sided adapters along with a pinless adapter. Shaft may be rotated both directions depending on the vehicle application. 25080 Adapter 1A - 1-1/2" (narrow pins) most Hondas, Mazdas, Dodge Conquests, Mitsubishi Starions and w1-1/2" GMs Adapter 1B - 1-1/2" (wide pins) most Fords, Toyotas and Fieros 25110 Adapter 2A - 1-5/8" most Nissans/Datsuns and Subarus Adapter 2B - 1-5/8" Mazda 3 and some Jaguar 29410 Pinless Adapter - front brakes that do not require the piston to be rotated back into the caliper *NO 3" ADAPTER