- KLIMAS wood screws 4x40 mm, presented in a box of 400 units - Countersunk head with TX sleeve ensures a perfect fit and efficient torque transmission - Special milling tip and cutting notches reduce resistance when screwing, making work easier and extending tool life - Double thread allows for faster and more secure grip in wood, reducing the required pressure - Wax coating optimizes assembly and decreases energy consumption of battery-powered tools - High tightening torque, suitable for screwing directly into hardwoods without pre-drilling - Perfect for construction projects, carpentry, and roof assembly