Diablo Hole Saw Extension, 18 x 3/8-In. Insect Control 30 times the life of

30 times the life of traditional bonded abrasive blades

An aggressive lower thread pattern provides superior holding power while the reverse upper thread pulls the board tight to the joist and provides a clean

durability and chemical resistance

molded from nylon and machined for size

Bi-Metal Blade for Clean Wood

Diablo Hole Saw Extension, 18 x 3/8-In. Insect Control 30 times the life ofDiablo, 18" x 3 8", universal extension, extend reach in hard to access areas, no tools required in order to attach accessories, quick change feature allows users to switch between accessories with no down time, ideal for use with diablo's snap lock plus hole saw mandrel.