Features Efficient Self-Tapping Design: Features a sharpen tip that allows for easy penetration into various wood types, often eliminating the need for pre-drilling and saving valuable time and effort during assembly. Standard ST4 Diameter: With a standardized ST4 (approximately 4.0mm) diameter, these screws offer universal compatibility with most pocket hole drilling jigs and accessories, ensuring a snug fit and optimals performance. Versatile Length Range (25mm - 63mm): Available in multiple lengths from 25mm to 63mm, accommodating a wide array of material thicknesses and project requirements, from thin panels to thick lumber. Minimizes Wood Splitting: The unique design of the screw point and thread significantly reduces the risks of wood splitting and splintering, even when working close to edges or in harder wood species. Exceptional Holding Power: Provides sturdy and secure clamping force, creating highly durable joints that withstand stress, vibrations, and provide long-term stability for your assembled pieces. Notice: 1.Actual color may be slightly different from the image due to different light effect 2.Please allow 1-3cm deviation due to manual measurement Description: Package: 100pcs or 552-piece screw set includes: 150 25mm screws, 150 32mm screws, 150 38mm screws, 50 50mm screws, 50 63mm screws, 1 PH2 bit, and 1 plastic box Package List: 1 Set Woodworking Antirust Oblique Hole Self Tapping Screws