CRL 3" Metal Tube Drill Diamond Drill Bits & Countersinks A full 4" (102 mm)

A full 4" (102 mm) in diameter

Adjustable Grip

Handle Design Allows Easy Maneuvering

Recommended for glazing of glass

polyurethane sealant specifically formulated for dynamically moving building joints

CRL 3" Metal Tube Drill Diamond Drill Bits & Countersinks A full 4" (102 mm)One Piece Construction Gives Rigidity and Durability The "Old Reliable" Way to Drill Glass CRL Metal Tube Drills are designed for use in our CRL Tripod Drill or similar type drill machine. They work with an abrasive grain such as CRL Silicon Carbide Grain to "drill" holes in glass through rotational abrasion. A coolant (or water) is mixed with the abrasive to form a slurry which is retained by a CRL Rubber Base Drilling Ring. The even and steady