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.