Type: Forstner Drill Bit Material:60#High Carbon Steel Blade type: arc edge Size: 6mm(1/4"), 10mm(2/5"), 12mm(1/2"), 15mm(19/32"), 16mm(5/8"), 18mm(23/32"), 19mm(3/4"). 38mm(1-1/2"), 40mm(1-9/16"), 41mm(1-5/8"), 45mm(1-25/32"), 48mm(1-7/8"), 50mm(1-31/32"), 51mm(2"), 54mm(2-1/8"),55mm(2-1/4"), 60mm(2-23/64"), 65mm(2-9/16"), 68mm(2-43/64"), 70mm(2-3/4"), 75mm(2-61/64"), 80mm(3-5/32"), 85mm(3-11/32"), 90mm(3-35/64"), 95mm(3-47/64"), 100mm(3-15/16").
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