Concho Screws by Tandy Leather International Save Liquid error (product-badge line 42): -Infinity% $2.29 SKU 1295-00 3/8" (10 mm) - $2.29 1/4" (6 mm) - $2.29 3/8" (10 mm) 1/4" (6 mm) Size 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity Add to cart 3/8" long screws for attaching screw back conchos to heavy leather.