Cheap And Discounts 1/4" Hexagonal Shank Metric Drilling and Tapping Combination Tap Metal Processing Hexagonal Shank Machine Tap Set Metric Plug Wholesale. Buy Directly From Merchant YHT E-Cigarette Tech Co., Ltd. Enjoy ✓Free Shipping Worldwide! ✓90 Days Buyer Protection. ✓Easy Return. ✓Money Back Guarantee.