PE7113 - 15pc Bi-Metal Hole Saw Kit For cutting holes in wood drywall steel plate conduits & plumbing pipes. High Speed Steel Bi-Metal cuts smoother and faster perfect for plumbing electrical maintenance and general construction. - M3 HSS Cutting Edge - Includes 11 Bi-Metal Hole Saws - Saw Sizes: 19mm 22mm 25mm 32mm 35mm 38mm 44mm 51mm 57mm 64mm 76mm. - Cutting Depth: 38mm - Arbors: 1 x Fits 14mm-30mm 1 x Fits 32mm-152mm - Extension Bar: 12in/300mm - 1 x Ejector Spring - 1 x Adaptor Tips for Hole Saw Use... Lubricant: Holesaws cut non-ferrous metals more efficiently with the use of lubricant. Cast iron should be cut dry. Aluminium cutting for best results use beeswax or paraffin. Feeds: Even pressure will produce the most efficient cutting action. Excessive pressure will dull teeth and shorten life of holesaw.
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