Amazon.com: Cloudray CO2 Laser Tube 40W 45W Length 720mm Dia.50mm Glass Tube With Metal Head For 35-45W CO2 Laser Engraving Cutting Machine : Arts, Crafts & Sewing
2 inch Square Tubing Steel Square Tube 50mm x 50mm x 7.87 inch / 200mm Length Wall Thickness 4.75mm, 4 Pack 2" 50mm WT 0.19in Hot Rolled ASTM A-36 Steel Square Tubings from Bopaodao
Amazon.com: ZIQI 4PCS Polycarbonate Rigid Tubing, 50mm (2") OD x 2mm Wall Thickness PETG Tube, 16.5 Inch Length Clear DIY Acrylic Tube Lexan Tubing : Industrial & Scientific
Amazon.com: Abester 1pc ID 46mm x OD 50mm x 500mm Carbon Fiber Tube (Roll Wrapped) 3K Matt Surface : Industrial & Scientific
Amazon.com: 2pcs 50MM OD X 48MM ID X 500MM 100% Carbon Fiber Tubes 3K Glossy Carbon Pipe/tubing : Toys & Games
Made in USA 2" Inch (50mm) Round Rubber Plugs For Holes, Flexible Black Rubber End Caps, Hardware Plugs, Metal Tubing Post Rubber Cover Protective End Caps For Furniture by Prescott Plastics
Amazon.com: ZIQI 4PCS Polycarbonate Rigid Tubing, 50mm (2") OD x 2mm Wall Thickness PETG Tube, 16.5 Inch Length Clear DIY Acrylic Tube Lexan Tubing : Industrial & Scientific