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Regular plastic plugs have a 3/8" shank and two clips on each side for a firm grip in aluminum, vinyl and steel siding. Our insulation plugs have an extra wide cap with a tapered edge for obscured vision on siding and a textured tip for easy painting.
Relton has been manufacturing high-quality Brazed-Carbide hole saws in the U.S.A. for over 50 years. Each hole saw has actual carbide teeth brazed into the steel body. All are made to be used dry or wet, hand-held or in a stationary drill.
Unlike other plugs which are completely tapered, our plug is slightly tapered 5 degrees. Our 3/4" thick plugs are slightly oversized on the top making for a tight fit. All are made from kiln dried lumber and are produced on specially designed equipment, resulting in quality, uniformly-sized plugs. Our plugs feature a unique advantage. They are manufactured by cutting from both sides at once, thus eliminating all splintered face edges that require time-consuming patching methods. These plugs are pre-counted and packaged in net bags, eliminating extra handling in further distribution and inventory control. SDS (PDF)
This carbide tipped hole saw has greater wear resistance and higher heat resistance than the bi-metal hole saws. The carbide tipped tooth design features triple chip grind for smoother, concentric cuts. This saw has up to 10 times longer life on abrasive material than standard bi-metal hole saws. It has a cutting depth of 1 1/2" (38mm). The Arbor, carbide tipped pilot, and extension is sold separately.