HAND TAP - HSS - 1/4 INCH X 20 - BSW - ALPS
https://www.toolsnsafety.com/shop/hand-tap-hss-1-4-inch-x-20-bsw-alps-4177
https://www.toolsnsafety.com/web/image/product.template/4177/image_1920?unique=c7c0967
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High Speed Steel Cut Thread Hand Taps BSW
