CRL 3" Suction Base Drilling Round Ring Backer Rods & Insert Tools Angle of chip is also

Angle of chip is also adjustable

They are fireproof in accordance with regulations and building codes

Transparent Handle Shows Level of Cutting Oil

Design Delivers 55% More Pressure Power

CRL 3" Suction Base Drilling Round Ring Backer Rods & Insert Tools Angle of chip is alsoInstantly Creates a Coolant Dam Slanted Walls Helps Stop Splashing Cleans Easily Won't Rust! Use our CRL Suction Base Drilling Rings for drilling glass whenever you use coolant or carbide grain. Made of a special rubber compound that won't break the glass if accidentally dropped on it. Easy to use, just wet the base with coolant or glass cleaner and press onto the glass. Four sizes of round rings, plus an oval shaped ring for drilling dual outlets.