Amazon.com: BEMONOC 2GT Open Ended Timing Belt Motor Drive Belt Width=9mm Rubber with Fiberglass Core for 3D Printer Pack of 5Meters & 5pcs GT2 Aluminium Timing Belt Pulley 20 Teeth 6.35mm Bore :
Timing Belt Pulley T10 Material Aluminium 30 Teeth for Belt Width 50mm 66 T10/30-2: Amazon.com: Industrial & Scientific
Kale KILIT 153/ 85mm Door Locks for Aluminium Profiles/Lock Cases for Cylinder Locks (Backset 30 mm) - - Amazon.com
Amazon.com: 8M 30Teeth Timing Belt Drive Pulley 25mm Bore 8mm Pitch For 30mm Width Belt 8M30T Synchronous Wheel without Step Aluminium Alloy (tooth width: 32mm, bore: 25mm) : Industrial & Scientific
Amazon.com : 30 Pcs Medium Dart Shafts for Soft and Steel Tips 2BA Thread Aluminium Alloy Dart Stems 50 mm 53 mm with Rubber Rings Replacement Harrows Dart Accessories and Flights : Sports & Outdoors
Miter Track Stop Ergonomic 30 Type Aluminium Alloy Woodworking Tool Accurate Limit Length - - Amazon.com
Amazon.com : Fried Elements Insider Aluminium air Pump – The Bicycle Pump That Plugs in The seat Post for seat Posts Inner Diameter 24 mm to 30 mm. : Sports & Outdoors