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Mssoomm High Lead Ballscrew SFE1616 RM1616 16mm Length 7.87 inch / 200mm with Metal Deflector Ball Screw Nut No End Machining for CNC Machine: Amazon.com: Industrial & Scientific
No End Machined SFU1605 200-1500 mm Ball Screw with 1605 Ball Nut OD 28mm CNC | eBay