Composite material: carbon fiber. 1 or 2 pcs carbon fiber tubes. Clear texture, good tensile strength. Very strong and light. Corrosion resistance, stable performance. High wear resistance, high toughness.
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ITM Bike Seat Tube Carbon Fiber 27.2/30.8/31.6 * 350/400mm Mountain Road Seat Tube Carbon Fiber Seat Tube Bicycle Accessories
Aliexpress UK
The mandrel material is stainless steel, and the item is manufactured in the United States. The carbon tube is made of pure 3K carbon fiber material. Matte finish is great for surface coating and adhesive bonding applications.
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10PCS Carbon Fiber Fishing Float DIY Fiber+1 Float Tube Good Concentricity Buoy Producing Fiber Fishing Tools Tackle Accessories
Aliexpress UK
The first choice for mountaineering and hiking. Install the included handle to use the monopod as a trekking pole or walking stick.
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BALUGOE Bicycle Headset carbon top Cap Carbon Fiber Bike Stem 28.6mm 1 1/8" Steerer Fork Tube Headset Cap Cover
Aliexpress UK
【Cuttable】: Easily cut to any desired length using a grinding wheel or cutting saw, providing maximum flexibility for your projects. It's just take you 1 minute. 1 Carbon Fiber Square Tube. We'd like to settle any problem in a friendly manner.
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BALUGOE Bicycle Headset carbon top Cap Carbon Fiber Bike Stem 28.6mm 1 1/8" Steerer Fork Tube Headset Cap Cover
Aliexpress UK
Size: Straight, 102mm(4") OD, " (300mm) Length, Thickness. This form of tubing is commonly used in all industries from motorsports to lengths:300mm(12"). Carbon fiber tube, carbon fiber tubing, carbon fibre elbow pipe straight hose joiners.
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2020 Willbmxforks newest BMX racing 20 inch bike forks carbon bicycle 20" 24"freestyle bmx race forks 1-1/8 to 1.5 /1-1/2 tube
Aliexpress UK
Brand: TOSEEK Size:27.5 inch/700C Color: Black Material: T800 Full Carbon Fiber Steerer Type:Upper tube 28.6mm，Lower pipe 39.8mm Steerer Diameter: 28.6mm Steerer Length: 300mm O.L.D Spacing: 100mm Axle System: 9mm QR/100*12mm Thru Axle Brake type:Disc brake,FM(for 160mm Rotor) Weight: about 434±20g Suit for tyre: 700C*45mm,Maximum Shoulder Cap：58mm Offset/Rake：40mm Package: 1pc* Fork(Boxed).
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litepro carbon seatpost 33.9 31.8 For Brompton Folding bike carbon fiber seatpost 580mm matte glossy carbon fiber seat tube post
Aliexpress UK
The first choice for mountaineering and hiking. Install the included handle to use the monopod as a trekking pole or walking stick.
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ELITA ONE Carbon Seat Post 27.2/30.9/31.6mm MTB/Road Biike Carbon Fiber Seatpost Titanium Screws Light 130g Seat Tube
Aliexpress UK
【Cuttable】: Easily cut to any desired length using a grinding wheel or cutting saw, providing maximum flexibility for your projects. It's just take you 1 minute. 1 Carbon Fiber Square Tube. We'd like to settle any problem in a friendly manner.
eBay
ELITA ONE Carbon Seat Post 27.2/30.9/31.6mm MTB/Road Biike Carbon Fiber Seatpost Titanium Screws Light 130g Seat Tube
Aliexpress UK