6063 Round Aluminium Tube 300 mm Length 17 mm OD 8 mm Internal Diameter without Welding Aluminium Pipe Straight 3 Pieces : Amazon.co.uk: Business, Industry & Science
Befenybay 2PCS 8mm to 8mm Aluminium Plum Flexible Shaft Coupling D25 L30 8x8mm Connector Flexible Coupler for 3D Printer CNC Machine and Servo Stepped Motor(8x8mm) : Amazon.in: Industrial & Scientific