General description Senco DuraSpin® Collated Screws are designed specifically for fastening drywall to wood. These screws feature a Phillips No.2 drive, a black phosphate finish, and a coarse thread with a bugle head, making them ideal for a variety of applications. Technical specifications Size: 3.9 x 35mm Drive type: Phillips No.2 Finish: Black phosphate Thread type: Coarse Head type: Bugle Pack size: 1000 screws (50 screws per strip) Compatibility and accessories Suitable for both cordless and mains operated machines Other information CE marked (EN145566)