It can deburr, chamfer and open hole, but ordinary twist drill can't. Little rock, it can carve out a nice aperture without firstly using a center punch. Material: HSS. Style: 4-42mm(4, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33, 36, 39, 42mm). Skip to main content. Shop by category. Shop by …
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