HAND TAP CS - 1/8 INCH X 40 - BSW - ALPS
https://www.toolsnsafety.com/shop/hand-tap-cs-1-8-inch-x-40-bsw-alps-4250
https://www.toolsnsafety.com/web/image/product.template/4250/image_1920?unique=c7c0967
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Carbon Steel Cut Thread Hand Taps BSW