Four-In-One Hone Kit Has all the parts necessary to assemble four individual hones. Quick release clips for easy removal and attachment of the 220 grit stones. Makes the following: 1: Two Leg Brake Cylinder Hone Capacity: 5/8" to 2.1/4"(16 to 57mm) 2: Three Leg Brake Cylinder Hone Capacity: 3/4" to 2.1/2"(19 to 64mm) 3: Disc Brake Hone Capacity: 1.1/4" to 3.1/2"(32 to 90mm) 4: Small Engine Cylinder Hone Capacity: 1.1/4" to 3.1/2"(32 to 90mm) All parts individually housed in storage case.