1. Material: aluminum alloy + bearing2. Applicable frame: The upper inner diameter of the head tube is 44 mm, and the lower inner diameter is 44 mm3. Front fork: standard vertebral canal front fork, upper 28.6mm, lower 39.8mm4. Heat-treated high-strength aluminum alloy material, high-quality CNC machining, light weight but high strength5. High-quality double-sealed bearing structure, smoother and quieter than steel ball bearings6. The rubber waterproof ring provides anti-corrosion, water-proof and sand-proof effects7. The anodizing process forms a dense protective film on the aluminum surface, which not only makes the color more beautiful, but also protects the aluminum alloy body more effectively8. Weight: 126 grams

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1. Forged CNC machining shell, 7050 ultra-light aluminum alloy, anodized, laser marking, very fine workmanship2. Two stainless steel sealed industrial bearings are used up and down, which are strong and durable, flexible in rotation, quiet and silent3. Material: 7050 aluminum alloy4. Specifications: suitable for 44mm inner diameter (outer diameter about 50mm) head tube frame + 28.6mm caliber front fork5. Weight: about 120 grams

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1. Material: steel2. Application: mountain/road bike, etc.3. Purpose: repair common full-concealed, press-in semi-concealed and external bearing bowl sets4. Features: laser engraved bearing parameters, inner and outer 45 degree chamfer, anti-rust and abrasion resistance, flexible rotation, wide applicability5. Specification: 41/41.8/47/49/52mm6. Weight: about 25g for 41mm, about 26g for 41.8mm, about 33g for 47/49mm, and about 35g for 52mm

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1. Weight: 74 g2. Specifications: Built-in 44 mm3. Material: aluminum alloy4. Suitable for modified models: For Dahon SP8, SP18, VP18, MUP8, JP8, BYA412, etc.5. Features: beautiful and practical, built-in stainless steel bearing, flexible rotation, lightweight design, lubrication and wear resistance, simple installation, durable6. Note: As long as it is a built-in 44mm modified folding bike, it can basically be used for Dahon

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1. Brand new and high quality. 2. Headset top cap to sit atop your threadless stem and add a bit of style to your bike. 3. Made of high quality material, practical and durable. 4. Manufactured from aluminum alloy for light weight and durability. 5. Suitable for MTB, road bike, folding bike, fixed gear bike, BMX, etc.

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1. Brand new and high quality. 2. Headset top cap to sit atop your threadless stem and add a bit of style to your bike. 3. Made of high quality material, practical and durable. 4. Manufactured from aluminum alloy for light weight and durability. 5. Suitable for MTB, road bike, folding bike, fixed gear bike, BMX, etc.

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1. Brand new and high quality 2. Material: Aluminium 3. Size: 1-1/2 inch 4. Internal Diameter: 39.8mm 5. Traditional and integrated type replacement headset crown races

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1. Brand new and high quality 2. Material: Steel+iron 3. Size: 1-1/8 inch 4. Bulk package of star nuts for use in aluminum steer tubes 5. Not for use with carbon steer tubes 6. Use appropriate tool for installation

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