Drill Size	Part #	Price
#80 .343mm .0135" 65 in stock	128.580	$8.30
#79 .368mm .0145" 65 in stock	128.579	$8.30
#78 .406mm .0160" 84 in stock	128.578	$8.30
#77 .457mm .0180" 95 in stock	128.577	$8.30
#76 .508mm .0200" 193 in stock	128.576	$8.30
#75 .533mm .0210" 57 in stock	128.575	$8.30
#74 .572mm .0225" 7 in stock	128.574	$8.30
#73 .610mm .0240" 77 in stock	128.573	$8.30
#71 .660mm .0260" 137 in stock	128.571	$8.30
#70 .717mm .0280" 17 in stock	128.570	$8.30
#69 .744mm .0293" 292 in stock	128.569	$8.30
#68 .787mm .0310" 7 in stock	128.568	$8.30
#67 .813mm .0320" 126 in stock	128.567	$8.30
#66 .838mm .0330" 120 in stock	128.566	$8.30
#65 .889mm .0350" 131 in stock	128.565	$8.30
#64 .914mm .0360" 110 in stock	128.564	$8.30
#63 .940mm .0370" 147 in stock	128.563	$8.30
#62 .965mm .0380" 116 in stock	128.562	$8.30
#61 .991mm .0390" 234 in stock	128.561	$8.30
#60 1.016mm .0400" 413 in stock	128.560	$8.30
#59 1.041mm .0410" 255 in stock	128.559	$8.30
#58 1.067mm .0420" 231 in stock	128.558	$8.30
#57 1.092mm .0430" 97 in stock	128.557	$8.30
#56 1.181mm .0465" 100 in stock	128.556	$8.30
#55 1.321mm .0520" 231 in stock	128.555	$8.30
#54 1.397mm .0550" 191 in stock	128.554	$8.30
#53 1.511mm .0595" 96 in stock	128.553	$8.30
#52 1.613mm .0635" 195 in stock	128.552	$8.30
#51 1.702mm .0670" 165 in stock	128.551	$8.30
#72 .635mm .0250" 165 in stock	128.572	$8.30
#50 1.778mm .0700" 180 in stock	128.550	$8.30

Sold in Packs of 10 Drills-These popular HSS (High Speed Steel) twist drills have the same diameter shafts as the drills themselves. Used by jewelers everywhere for drilling small holes into all sorts of non-ferrous metals like gold, silver, copper and brass. Use by hand in a suitable adjustable chuck handpiece or for best results with a drill press. Can also be used in adapter chucks (see below) so you can use them in collet style quick change handpieces.

These sizes, from the smallest #80 ( 0.34 mm) to the larger #50 (1.78 mm) are sold in packs of 10 drills. We also have sizes #49 to #30 available in packs of 5 drills (see below), and many other drills available in the sizes below in different shank sizes and metal types.

Drill #	MM Diameter	Inch Diameter	Closest Metric
#80	.343 mm	.0135"	N/A
#79	.368 mm	.0145"	N/A
#78	.406 mm	.0160"	0.4 mm
#77	.457 mm	.0180"	N/A
#76	.508 mm	.0200"	0.5 mm
#75	.533 mm	.0210"	N/A
#74	.572 mm	.0225"	N/A
#73	.610 mm	.0240"	0.6 mm
#72	.635 mm	.0250"	N/A
#71	.660 mm	.0260"	N/A
#70	.717 mm	.0280"	0.7 mm
#69	.744 mm	.0293"	N/A
#68	.787 mm	.0310"	N/A
#67	.813 mm	.0320"	0.8 mm
#66	.838 mm	.0330"	N/A
#65	.889 mm	.0350"	N/A
#64	.914 mm	.0360"	0.9 mm
#63	.940 mm	.0370"	N/A
#62	.965 mm	.0380"	N/A
#61	.991 mm	.0390"	N/A
#60	1.016 mm	.0400"	1.0 mm
#59	1.041 mm	.0410"	N/A
#58	1.067 mm	.0420"	N/A
#57	1.092 mm	.0430"	N/A
#56	1.181 mm	.0465"	1.1 mm
#55	1.321 mm	.0520"	1.2 mm-1.3 mm
#54	1.397 mm	.0550"	N/A
#53	1.511 mm	.0595"	1.4 mm-1.5 mm
#52	1.613 mm	.0635"	1.6 mm
#51	1.702 mm	.0670"	1.7 mm
#50	1.778 mm	.0700"	N/A

California Prop 65 Warning:
Cancer and Reproductive Harm. www.P65warnings.ca.gov.

Packs of 10-High Speed Steel Twist Drills Sizes #80 to #50

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