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.
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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.
Insulation holes in wood sheathing are normally sealed with pre-cut tapered wooden plugs. Unlike other plugs which are completely tapered, our plug is slightly tapered only 7/8 of its total thickness for easy insertion. The top 1/8 is the full diameter measurement for a tight even 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. Special sized, primed plugs and other types of wood are available upon request. Sizes listed are the actual bit sizes. SDS (PDF)