Cheap And Discounts CNC Adjustable RBH 19-25 rough boring head 25-33 32-42 40-55 68-92 90-122 double-edged boring bar cutter handle LBK1-6 Twin bit Wholesale. Buy Directly From Merchant KDKL TOOLS Store. Enjoy ✓Free Shipping Worldwide! ✓90 Days Buyer Protection. ✓Easy Return. ✓Money Back Guarantee.