HAND TAP - HSS - 6 MM X 1.0 MM - ALPS
https://www.toolsnsafety.com/shop/hand-tap-hss-6-mm-x-1-0-mm-alps-4210
https://www.toolsnsafety.com/web/image/product.template/4210/image_1920?unique=c7c0967
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High Speed Steel Cut Thread Hand Taps Millimeters