Application: For 1/4 in. DIN 3126-C 6, 3 (ISO 1173) hexagon insert bits & Wera Series 1. Design: With stainless steel sleeve, retaining ring, & strong permanent magnet. Drive: 1/4 in. hexagon, suitable for power tools with DIN 3126-F 6, 3, ISO 1173 receiver. Magnetic bit holder for use with screwdriver bits. 1/4 in. Drive 1/4 in. Capacity: 152 mm.