1、The main body is made of aluminum alloy, and the pull rod of the expansion lock cylinder is made of carbon steel. The thread is not easy to fall out, and the stability is better 2、The screw on the cover of the headset is made of stainless steel to increase the strength, and the rest are all made of aluminum alloy to ensure light weight, for T6 heat treatment to ensure the overall hardness, and CNC knurling process to ensure the strength 3、The pawl lock block of the expansion body adopts a 3 section pawl, which has a larger force bearing area than the ordinary 1 section/2 section, and a better fit. The lock block is lengthened, the larger the force area, the better the stability 4、Has the characteristics of convenient installation and disassembly and reusability, with clear texture, which fits the front fork closely and does not damage the front fork 5、Mainly used on carbon fiber front forks and mountain suspension front forks. General front forks can also be used to protect the front forks from damage Item Type: Compression Plug Material: Aluminum Alloy Body, Carbon Steel Lock Core Product Size: Expansion Body Length Approx. 40mm/1.6in Expansion Range: Approx. 22.2-25.4mm/0.9-1.0in Applicable Front Forks: 25.4mm1.0in and 28.6mm/1.1in Outer Diameter Carbon Fiber Forks and Mountain Suspension Forks 1 x Compression Plug 1 x Screw 1 x Headset Cover