CRL 7/8" High Speed Hole Saw Steel & Brass Tube Drill Bits They have a positive grip

They have a positive grip knurled nut for tightening onto the tap

Works with PT10HV11 Lifters

and European glass drilling machines

roll formed flute

CRL 7/8" High Speed Hole Saw Steel & Brass Tube Drill Bits They have a positive gripAvailable in Sizes 5 8" through 4" (16 to 102 mm) High Speed Steel Cutting Edges The CRL High Speed Hole Saws are heavy duty tools made to meet the demands of users in the automotive, electrical, and industrial trades. This professional quality line of Hole Saws is available in a complete range of sizes from 5 8" to 4" (16 to 102 mm). Special high speed steel cutting edges are welded to alloy backs. Knock out holes provide easy core removal. Depth of