General description Senco DuraSpin® Collated Screws are designed specifically for fastening drywall to wood. These screws feature a bugle head and coarse thread, making them ideal for a variety of applications. Technical specifications Size: 3.9 x 45mm Drive type: Phillips No.2 Finish: Black phosphate Thread type: Coarse Pack size: 1000 screws (50 screws per strip) Compatibility and accessories Suitable for both cordless and mains operated machines Other information CE marked (EN145566)