MILWAUKEE SHOCKWAVE Impact Hole Saw 3/4 Inch Arbored, 49-56-9805.  Features MILWAUKEE SHOCKWAVE Impact Hole Saw 3/4 Inch Arbored.  Utilizing a thin wall, 8TPI design, Thin Wall Hole Saws deliver a burr-free cut up to 40% faster than standard bi-metal hole saws. 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.  For use in plastics and thin gauge metals up to 1/8” thick.  Hole saw shank 1/4 inch. 

Retail packaged.  New old stock.  Packaging shows signs of warehouse storage.