20v, max, lithium-ion 4-1/2" cut off tool kit, 6,500 rpm motor provides high power for cutting & grinding applications, quick change wheel release allows for tool free wheel changes without need for a wrench, tool free guard allows for quick, easy guard adjustments/positioning, 2 finger trigger switch with lock off button for convenient activation & easier gripping, 2 position side handle offers greater control, comfort & versatility, includes: spanner wrench, type 1 cutting guard & 2 position side handle, for replacement battery use tv #205-576.