The Besttoolifes Gold, Aluminum Alloy For Bicycle Headset Spacer is an essential component for your biking journey, especially for those with 1-1/8" steerer tubes and 28.6mm fork diameter. This conical spacer is made of high-quality aluminum alloy, making it lightweight and durable. The 15mm height ensures optimal fitment and clearance, while the 28.6mm fork diameter compatibility ensures compatibility with a wide range of bicycles. Constructed with precision and care, this headset spacer is not just a cycling component but also a symbol of Besttoolifes commitment to quality and customer satisfaction.