Cheap And Discounts BT40 BT30 BT40 BT50 Through hole pull nail milling tool holder fixed knob DIN69872 MAZAK JT 30 40 50 Through hole Wholesale. Buy Directly From Merchant Shop1104039717 Store. Enjoy ✓Free Shipping Worldwide! ✓90 Days Buyer Protection. ✓Easy Return. ✓Money Back Guarantee.