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The Milwaukee Electric Tool Corp 49-56-0509 is a Diamond Max hole saw bit designed for cutting clean, precise holes in hard, brittle materials including glass, tile, and ceramic. The 3/8-inch cutting diameter makes it well suited for smaller bore applications such as fixture mounting, pipe pass-throughs, and hardware installations in hard-surface materials. The bit is constructed with a diamond-coated cutting edge, which delivers the hardness needed to work through glazed and unglazed tile surfaces, tempered glass, and ceramic without chipping or cracking the substrate. A pilot bit is included to keep the saw centered during the cut.
This hole saw bit is used in residential and light commercial applications wherever trade professionals or skilled installers need to bore through hard, non-ferrous surfaces. Typical scenarios include setting drain or supply fixtures through tile walls, mounting glass-mounted hardware, or creating clean openings in ceramic backsplashes. The bit is sold in a package of 3 units, making it practical for jobs that require multiple holes or as a replacement supply for ongoing service work.
Designed for use on glass, tile, and ceramic surfaces; suitable for standard rotary drills accepting compatible mandrel and pilot bit configurations.
Installation should be performed by a qualified tradesperson familiar with hard-surface drilling techniques. Use water or a compatible coolant to reduce heat buildup at the cutting surface during operation, as dry cutting can damage both the bit and the workpiece. Apply steady, moderate pressure and allow the diamond edge to do the work — avoid forcing the bit through the material. Always wear appropriate eye protection when cutting glass or ceramic.
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