This precision made Drill Bit Sharpening Machine is so simple to use, anyone can sharpen dull bits in three easy steps. Just set the drill bit in the collet, grind the taper relief angle and grind the web thinning angle to reduce the center point width. It features a depth adjustment gauge, tapered diamond wheel, 90°-140° angle setting adjustment and built-in collet tray. Collet sizes include 1/8", 5/32", 3/16", 1/4", 9/32", 5/16", 3/8", 25/64", 7/16", 15/32" and 1/2". Patented in the US!
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