Cheap And Discounts Brass Bushing Guide Sleeve Precision Copper Base Bearing For Slide Block 3D Printer Accessories Inner Diameter 3/4/5mm Wholesale. Buy Directly From Merchant ANBYSFXLTP-CNC Tools Store. Enjoy ✓Free Shipping Worldwide! ✓90 Days Buyer Protection. ✓Easy Return. ✓Money Back Guarantee.