It can be pressed in fully and is with better damping performance. 7075 aluminum alloy, more stronger than AL6061. Intergrated air rod:can reduce the air leakage, easy installation and maintaince, extend the life of the fork. Bushing: for most fork, the bushing is plastic.Our fork is with aluminum alloy bushing, which makes the fork more stronger, meets your higher riding requirement. Oil sponge: Our fork is with the oil sponge, which can keep the lubricate oil for longer time, makes the fork more smooth. Stanchion diameter 34MM, more stronger than normal forks.