●T8 Lead screw diameter: 8mm; Pitch: 2mm; Lead: 8mm. ●Nuts are mainly used for high transmission precision transmission equipment, with elimination gap,elimination of poor, silencer function, anti-vibration functions. ●Compatible with Reprap Z axis, CNC, etc. ●Special anti-backlash nut, high precision, low cost DIY engraving machine, 3D printer preferred. ●This nut is made from POM for durability and long service life.