-Used with universal drills. -It is silanated. -Modulus of elasticity: 20-30Gpa. -Radiopacity: 1.8mmAL -It has unique design. -Top: the bonding point is designed with an oblique heave, relieve multi-directional cross-change stress, to increase bonding area, improve lock-in strength, prevent twisting loose, enhance the further reliability to use. -Middle: ring fixation groove, increase axial solidity strength and effective bonding area. -Bottom: fixed taper design, suitable for root canal anatomical form, enhance the consistency between the pile and the root pipe, accurate positioning, help to reduce root canal reserves, prevent the occurrence of root canal perforation.