Hole Saw Kit, Ice Hardened Bi-Metal, Ice Hardened Bi-Metal, Number of Pieces 8, Teeth Variable, Teeth per Inch 4/6, Use Arbor G4315534, Cutting Holes In Various Materials., Includes (5) Hole Saws 3/4, 7/8, 1, 1-1/8, 1-1/2 In.; Twist Release Arbor with Pilot Bit; Additional Pilot Bit; Adapter; 1/8 In. Hex Key; Spacer