The HERCULES™ Hole Saw Arbor helps make quick and easy changes with HERCULES™ and other common hole saws. Designed to fit 3/4 in. to 1-1/8 in. hole saws, this heavy-duty arbor is equipped with a 1/4 in. 135° pilot drill that easily starts holes in wood and metal. The no-slip 3/8 in. hex shank keeps arbor secure in high torque applications.