Amazon.com: 20mm 4 Flute HSS and Aluminium End Mill Cutter CNC Bit : Industrial & Scientific
Amazon.com: 8M 15Teeth Timing Belt Drive Pulley 20mm Bore 8mm Pitch For 15mm Width Belt 8M15T Synchronous Wheel without Step Aluminium Alloy (tooth width: 16mm, bore: 20mm) : Industrial & Scientific
Befenybay 2PCS 10mm to 10mm Aluminium Plum Flexible Shaft Coupling Diameter 20mm Length 25mm Connector Flexible Coupler for 3D Printer CNC Machine and Servo Stepped Motor(10x10mm): Amazon.com: Industrial & Scientific
6Pack 6.6FT/2 Meter Plaster-in LED Drywall Aluminum Channel with Flange for 12mm Strip Lights, Recessed Aluminium LED Profile with Clip-in Diffuser and End Caps: Amazon.com: Tools & Home Improvement
Amazon.com: 5M 70Teeth Timing Belt Drive Pulley 20mm Bore 5mm Pitch For 20mm Width Belt 5M70T Synchronous Wheel without Step Aluminium Alloy (tooth width: 21mm, bore: 20mm) : Industrial & Scientific
Amazon.com: Awxlumv 2 Pcs Aluminum Chipset Heatsink 100 x 40 x 20MM/ 3.93 x 1.57x 0.79 inch Diffusion Cooling Fin Comb Heat Sink Cooler : Electronics
Linear Rails Aluminium Alloy 12/16/20mm SBR Linear Rail Shaft Stop Collar Shaft Limit Fixing Ring CNC Parts - (Color: 16mm): Amazon.com: Industrial & Scientific
Amazon.com : H World Shopping Airsoft Aluminium 45 Degree Offset Single Side 20mm Picatinny Weaver Rail Mount : Sports & Outdoors
Amazon.com: Front Fork Barrel Shaft, 20mm to 15mm Front Hubs Tube Shaft Axle, Aluminium Alloy Accessories for Bicycle(100 Open Gear) : Industrial & Scientific
Amazon.com: 8M 24Teeth Timing Belt Drive Pulley 20mm Bore 8mm Pitch For 40mm Width Belt 8M24T Synchronous Wheel without Step Aluminium Alloy (tooth width: 42mm, bore: 20mm) : Industrial & Scientific
ALUMINIUM ROUND BAR/ROD 4,5,6,8,10,12,16,20mm diameter (in many Lengths) | eBay
clamp Collar Double-Split Made of Aluminium, bore 20mm: Clamp On Shaft Collars: Amazon.com: Industrial & Scientific