3/16" Hss Double End Reddevils Brand High Quilty Drill Bit, Qualtech Double End Drills Are Used For Drilling Truck And Auto Bodies, Or Any Thin Sheet Metalpopular For Pop Rivet Applications A Dependable, General Purpose Drill Ideal For Production, Maintenance Or Portable Drilling Jobs For Use In A Wide Range Of Materials Such As Aluminum, Brass, Copper, Metal, Plastic And Wood Surface Treated With Abrasion-Resistant Black Oxide135° Split Point Tip For Fast Penetration And Accurate Drilling