Cheap And Discounts Thread Plug Gauge Steel Mer-cury Gage American Fine High Quality 2B U1-7/16 1-1/2 1-9/16 1-5/8 1-11/16 1-3/4 Measure Tool Wholesale. Buy Directly From Merchant LFMJ Hardware Cutting Tools Store. Enjoy ✓Free Shipping Worldwide! ✓90 Days Buyer Protection. ✓Easy Return. ✓Money Back Guarantee.