uxcell M13 E-Nut Wood Insert Interface Screws Hex Socket Nut Fittings 25 Pcs Product Name : Hex Socket Head Insert E-Nut;Head Type : Hex Head Hex KeySize : 13mm/0.51;Female Thread Size : 8mm / 0.3" Head Diameter : 14mm/0.55";OverallLength : 17mm / 0.7" Material : Metal;Color : Brass Tone Total Weight : 161g;Package Content : 25 Pcs x Hex Socket Head Insert E-Nut