ESSVE wood screws with 2 fiber cutters are intended for most indoor installation work - wood, chipboard, veneer, plastic, dowels, etc. c.Screws made of hardened steel, bright galvanized. TX nozzle. The screws have 2 fiber cutters. This ensures very low screw-in torque in hardwood materials and reduces the formation of cracks. Screws longer than 160 mm have an additional thread right next to the normal wooden thread to make it easier to screw in longer and thicker screws. The screws comply with CE requirements EN14592.Recommended speed: 400-1200 rpm.