250mm Ball Screw SFU1204 Diameter 12mm,4mm Pitch with Metal Ball Screw Nut for CNC Machine: Amazon.com: Industrial & Scientific
Amazon.com: SINDERY Studio 3 Screws Replacement Studio 2 Wireless Parts Accessories Repair Kit and Screwdriver Compatible with Studio3 Studio 2.0 Studio 3.0 Wireless Headphones -B0501/ B0500 (Black) : Electronics