Cheap And Discounts 1PCS A/M 12MM C12 ER8 ER11 C12 ER16 ER20 100L 150L 200L Collet Chuck Deep Processing Straight Shank Extension Rod For CNC Mill Wholesale. Buy Directly From Merchant Shop4552048 Store. Enjoy ✓Free Shipping Worldwide! ✓90 Days Buyer Protection. ✓Easy Return. ✓Money Back Guarantee.