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Otto Frei carries the Spearhead brand of High Speed Steel (HSS) 90 degree setting burs which are hand cut by expert craftsmen in the USA. You can always recognize the Spearhead brand of HSS 90 degree bearing burs by the size stamped on the 3/32" shanks. While more expensive than imported Tungsten Vanadium Carbon Steel Burrs, these HSS burs will stay sharp and give a longer service life than the not as a hard machine cut Tungsten Vanadium burr. HSS burs are preferred by quality jewelers everywhere.

Choose from 33 sizes:

Part No.	Metric Size	Bur No.
119.421	.90 mm	1
119.422	1.10 mm	2
119.423	1.30 mm	3
119.424	1.50 mm	4
119.425	1.70 mm	5
119.426	1.90 mm	6
119.427	2.10 mm	7
119.428	2.30 mm	8
119.429	2.50 mm	9
119.430	2.70 mm	10
119.431	2.90 mm	11
119.432	3.10 mm	12
119.433	3.30 mm	13
119.434	3.50 mm	14
119.435	3.80 mm	15
119.436	4.00 mm	16
119.437	4.30 mm	17
119.438	4.50 mm	18
119.439	4.70 mm	19
119.440	5.00 mm	20
119.442	5.20 mm	22
119.443	5.40 mm	23
119.444	5.60 mm	24
119.445	5.90 mm	25
119.446	6.30 mm	26
119.447	6.70 mm	27
119.448	7.20 mm	28
119.449	7.60 mm	29
119.450	8.00 mm	30
119.451	8.90 mm	31
119.452	9.60 mm	32
119.453	10.40 mm	33
119.454	11.10 mm	34

Sold individually

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High Speed Steel 90-Degree Bearing Burs .90mm-11.10mm

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High Speed Steel 90-Degree Bearing Burs .90mm-11.10mm

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