Consists of a taper-headed cone, washer and lead sleeve. Cone and nut are completely assembled. Widely used in fence, burglarproof doors and windows, canopy, air conditioning rack fixation, home decoration, engineering, etc. When installed, the taper-head metal cone expand the lead sleeve to fill all the pores and crevices of the material in which it is set. The expansion bolt is a fastener that expands and locks itself into a hole. It consists of a threaded bolt with a cone-shaped tip and a surrounding sleeve. When the bolt is tightened, the cone is drawn into the sleeve, causing the sleeve to expand and grip the sides of the hole. Punch Diameter: 14mm / 0.55"; Sleeve Tube Size: 14mm x 70mm / 0.55" x 2.8" (D*L); Overall Length: 100mm / 4"; Thread Diameter: M10 / 0.4".