887/4 RR Rapidaptor Universal Bit Holder with ring magnet, 1/4", x 57 mmRapidaptor universal holder for bits with 1/4", external hexagon drive as per DIN ISO 1173-C 6.3 and E 6.3 (ISO 1173). The floating, fast-rotating magnet sleeve holds even long and heavy screws firmly. The Rapidaptor allows mounting the bits without using the sleeve. The bit is removed by simply pushing it forward - for lightning-fast bit changes, even with just one hand. 1/4", hexagonal, suitable for screwdriver machines with mounting as per DIN ISO 1173-F 6.3.