Description 887/4 RR Ring Rapidaptor Ring Magnet Bit Holder CE 6.4 For lightning-fast bit changes - even with just one hand. The ring magnet also holds large and heavy screws in place - allows lightning fast set-up, also ideal for overhead work. Features: Rapid-In Self Lock. Rapid-out. Rapid Spin For 1/4"” bits according to DIN 3126-C 6.3 and E 6.3 and Wera rows 1 and 4. With ring magnet. Technical data: Drive (tool): 1/4"” (6.3 mm) Weight: 50 g Product dimensions, Length: 57 mm Package Content: 887/4 RR Ring Rapidaptor Ring Magnet Bit Holder CE 6.3