This beefy machine is a unit that is made in the same factory as many more expensive units! It features a 1 HP motor to power you through the toughest woods, with a max bit capacity of 1" in soft woods, 3/4" in hardwood. The massive cast iron construction allows for drilling of true square holes in the wood that you choose to work with. Uses standard chisels in either 5/8" or 3/4" with included bushing. A wonderful machine for a great price!