Material: PA, PE Component: Nylon plug, steel nail screw Application: construction, brick, wall, concrete, house deaoration color: grey Description: Type counteraunk head round head Mushroom Size M5*30/35/40/50 M6*30/35/40/50/70/80/100 M8*40/45/60/80/100/120/135/140/160 M10*80/100/120/135/140/160