Drill + tap set Nr.306 ( 14 Pcs ) in standard plastic cassette to produce ISO- Metric threads from M3 up to M12, consisting of 7 HSS-E-PM steam tempered spiral point tap E240 with chamfer form B with a 3.5-5xP second lead, 7 HSS steam tempered jobber length drills with straight shank A108 for the recommended pre-machined hole diameters for 2.5xD through hole threading in stainless steel
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