Irwin 29/64 In. Black Oxide Drill Bit Reducers and use stainless steel bolts

and use stainless steel bolts and nuts making them corrosion resistant

on-board bit holder

Square trim

1/4" Female NPT (Inlet) x 3/8" Female NPT (Outlet)

3 Month Filter Is 90% Effective At Capturing Large Allergens Like Mold Spores & Pet Dander

Irwin 29/64 In. Black Oxide Drill Bit Reducers and use stainless steel boltsGeneral purpose bit for drilling through metal, wood, fiberglass, stainless steel. Constructed of M 2 high speed steel for the best combination of strength, heat resistance, and wear resistance. Black oxide coating resists corrosion. 135 degree split point drills on contact and prevents walking. Tapered web eliminates bit spinning in the chuck.