HSS ADJUSTABLE ROUND DIES - 1 INCH O.D - 1/4 BSW - ALPS
https://www.toolsnsafety.com/shop/hss-adjustable-round-dies-1-inch-o-d-1-4-bsw-alps-4371
https://www.toolsnsafety.com/web/image/product.template/4371/image_1920?unique=c7c0967
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High Speed Steel Adjustable Round Dies BSW