Impact Screwdriver Bits designed for Philips PH3 fastening applications feature a 1/4 inch shank size and an overall length of 1 inch. These bits ensure compatibility with a variety of impact drivers, providing reliable performance and durability. Constructed for efficient fastening, they are suitable for both industrial and DIY use. The compact design allows for easy access in tight spaces. Ideal for professionals looking for precision and strength in their fastening tasks.