ESSVE floor screws are designed for hardwood floors, floor or wooden slats, etc. c. for mounting on a wooden frame indoors. When laying a harder material, such as oak floors, it is necessary to perform pre-drilling. Screws made of hardened steel, yellow galvanized. Square nozzle no. R1. Each 250 pieces. pack contains 1 nozzle no. R1. To prevent cracks, the screws have a short drill.