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
250mm Ball Screw SFU1204 Diameter 12mm,4mm Pitch with Metal Ball Screw Nut for CNC Machine: Amazon.com: Industrial & Scientific
Amazon.com: Prime-Line 9004918 Machine Screw, Round Head, Slotted/Phillips Combo, #12-24 X 1/2 in, Zinc Plated Steel, Pack of 75 : Industrial & Scientific
Amazon.com: #4-40 x 1/2" Hex Socket Button Head Cap Screws Bolts 200 PCS, Allen Socket Drive, 304 Stainless Steel 18-8, Bright Finish, Full Machine UNC Threads : Industrial & Scientific