The 10" Expander wheel is an excellent choice for aggressive grinding applications. The belts are approximately 2"x31" long. The belt speed is phenomenal; it takes off material very quickly with less heat buildup. Fits 5/8 shaft grinders. Baldor 1/2hp or 3/4hp grinder 3600rpm motor is recommended. This expander wheel requires a minimum 2-1/2” shaft length and hould not be operated without guard mounted. Do not run without belt on wheel or damage will result.