Engineered and tested to meet the highest standards, these Premium Grade S2 tool steel screwdriver bits are designed for ling life and heavy duty use. The heavy duty storage case is a bonus, allowing added organization to those common bits that always seem to get lost 9stores accessories up to 6''). Double ended driver bits are adaptable for most jobs regardless of trade. This set includes the most commonly used bit sizes for everyday applications. Includes: Compact Magnetic Screw guide, (1) S1 insert bit, (3) S2 insert bits, (1) S3 insert bit, (1) SL6 8 bit, (1) SL8 10 bit, (1) P1 bit, (5) P2 bits, (1) P3 bit, (3) P2 P2 double ended bit, (1) P3 SL10 12 double ended bit, (1) P1 SL6 8 double ended bit, (1) P2 SL8 10 double ended bit, and case.