Designed with a ¼” quick change hex shank, Milwaukee® Shockwave Impact Duty™ Thin Wall Hole Saws utilize a thin wall, 8 TPI design, to deliver a burr-free cut. The included ejection spring removes the frustration of manually removing slugs by automatically ejecting the material. A stop shoulder design prevents over-drilling into material and potentially damaging inner components of electrical and junction boxes. Chose Thin Wall Hole Saws for use in plastics and thin gauge metals up to 1/8” thick.