Pistol grip tire groover/siper has a unique glass reinforced nylon pistol grip that is light and cool for ease of operation. The solid brass head keeps the heat “just ahead” of the cutting blade to pre-heat the rubber for rapid and accurate cutting. The groover has a heavy duty 250 watt heating capacity, and the kit comes complete with a .215″ wide brass #4 head, a pack of (12) #4 blades and a seven foot power cord. Replacement head and blade sizes are available in sizes: #1, #2, #3, #4, and #6. Sold separately. NOTE: The blade and head numbers correspond, so make sure to order the same size head and blades.