2PCS 5mm to 8mm Aluminium Plum Flexible Shaft Coupling D20 L25 Connector Flexible Coupler for 3D Printer/DIY Encoder and Servo Stepped Motor: Amazon.com: Industrial & Scientific
Amazon.com: Automotive-leader 6mm 1/4" Fuel Non Return One Way Check Valve Control for Petrol Diesel Fuel Oil Water Aluminium Alloy Accessories : Automotive
Amazon.com: 8mm 5/16" Fuel Non Return One Way Check Valve Petrol Diesel Aluminium Alloy : Automotive
Antrader 4Pcs 8mm Thick Solid Aluminum Circle Disc Glass Top Adapter for Coffee Tea Table Bar with Anti-Slip Rubber Ring, M8 Thread 59mm Diameter - - Amazon.com
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
MECCANIXITY 60 Teeth 8mm Bore Timing Pulley, Aluminium Synchronous Wheel Silver for 3D Printer Belt, CNC Machine, Pack of 2: Amazon.com: Industrial & Scientific
Aluminiumblech 8mm 5083 100 mm x 100 mm (10cm x 10cm) : Amazon.de: Gewerbe, Industrie & Wissenschaft
Linear Rails 4080U 8mm 250mm/300mm/350mm400mm/450mm Stroke Aluminium Profile Z-axis Screw Slide Table Linear Actuator Kit for CNC Router - (Guide Length: 250mm Color: Black): Amazon.com: Industrial & Scientific
Amazon.com: Swing Arm Spool, 8/10mm Motoycle CNC Aluminium Alloy Swing Arm Spool Sliders Stand Swingarm Bobbins (8mm-Silver) : Automotive