The Fat Demo Bit is very much a luxury ice bit that is better in cold ice. The fat demo bit replaced the normal demo bit as my favorite tool to use in a competition. The fat demo bit is a 6.5" by 1.25" wide, five fluted, handmade, stainless steel cutting, bit. The Fat Demo Bit will only fit a newer version custom 800 Makita shaft the same way a Beast Bit fits the new shaft. It is only sold as a Kit. Grinder, Shaft, and Bit. After Market Bearings are available separately. This bit shoots 20' rooster tails of snow, which make it hard to use in a shop. It is a fun bit and great for Ice Shows!