Cutting depth of 38mm. 6.35mm x 75mm Arbor Drill Bits. Suitable for use with all Knightsbridge holesaw arbors. A4 size arbor with 6.3mm high speed pilot drill bit with 9.5mm hex arbor shank. A2 size arbor with 6.3mm high speed pilot drill bit with 11mm hex arbor shank.
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