HOLE SAW: Our high-speed steel sharp cutting teeth effectively drill through metal, wood, cornhole boards, PVC board, plastic, drywall, and more. The hole saw set includes 1* 4'' hole saw, 1*arbor(with 1 drill bit), 1*drill bit for replacement, and 1*hex key.Cutting diameter is 4" / 102mm, opening depth is 1.5" / 38mm.

PREMIUM MATERIAL: Hole saws are made of high-speed steel, which has higher hardness, higher toughness, higher cutting strength, and stronger wear resistance.

WIDE APPLICATION: The HSS hole saws are perfect cutting tools for installing recessed light into the ceiling, punching a big hole in the wall to fit a vent pipe or an extract fan, and for cable installation. Hole saws can cut holes in wood, plywood, plastic, drywall, soft plaster, cornhole boards and thin metals.

EASY TO USE: Rotate the arbor and hole saw until it's very close (don't need tight), then line up the locking pins with the hole at the hole saw and screw them tightly.

QUALITY COMMITMENT: We stand behind the quality of our products. If for any reason you are not satisfied with your purchase, please contact us. We provide a 60-day money-back and 12-month warranty. 100% Satisfaction Guarantee for risk-free shopping!