The Dewalt DT20500 is a 2-in-1 Right Angled Attachment with long life gears that provide 10x Longer Life. It has a 38mm head depth for ultimate accessibility. Also a choice of operating lengths of 65mm or 140mm and a 6.35mm/1/4in drive. Impact Ready with strength to stand up to the power of today's impact drivers. Features: Rare Earth Magnet - Retains fastener for easy one-handed use Metal Gearcase with Quick Bit Ejection - For durability and convenience on any jobsite Specification: Part Number: DT20500 Drive: 6.35mm/1/4in