CRL Unibit® Step Drill 3 Piece Set Multi Surface Drill Bits Its crown shaped steel cap

Its crown shaped steel cap gives you a center for hammer blows

Used on SJ110DM Sandblasters

Cutting Capacity (Wood) 5-5/16" (135 mm) Thick

anti-bacterial

CRL Unibit® Step Drill 3 Piece Set Multi Surface Drill Bits Its crown shaped steel capDrill Up To 13 Diameters with Just One Drill Perfectly Round Holes in Thin Material The CRL Unibit Step Drill Set uses a unique, single flute design to drill perfectly round holes in thin materials. Cutting steps of progressively larger diameters make it possible to drill up to 13 different hole sizes with a single bit. Also, the hole is automatically deburred by the cutting edge of the next size up. Hole starting is easy because it won't skid across