Birchwood Casey Pro Screwdriver Set, 40 Piece Kit, Red BC-PROSDS The Birchwood Casey 40 Piece Pro Gunsmithing Screwdriver Set provides a variety of bits for a variety of gunsmithing tasks. With 40 pieces coming in a clear front" plastic storage container it will be easy to find the right tool for the job. Since 1948" serious shooters" avid collectors and professional gunsmiths have relied on Birchwood Casey for shooting and gun care products that have stood the test of time. Birchwood Casey has pioneered innovative products with an unwavering dedication for quality.