CB20070L

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20 mm (Dia.) Cylinder (Hinge) Bit These boring bits are designed for accurate boring and the two wing cutters and two spur cutters prevent bottom side tear out. Boring bits are sup plied with a 10mm shank with an adjustable top screw making them compatible with most boring machines. The 3557E is designed with a 3/8" shaft to fit in most drill presses. (CB20070L, 10mm Shank, 20mm Cut Dia, 70mm OAL LH Hinge Boring Bit Show more