5/8" to 1/2" Drill Bit Adapter – Pursell Manufacturing
8Pcs Power Hand Tools Socket Adapter Set, EEEkit Driver Power Drills Impact Socket Bit Hex Adapter Extension Set, Socket Wrench Adapter Set 1/4 3/8 1/2 Drive for Auto, Home Repair, Masonry Tools - Walmart.com
Wera Tools 042768 1/2" Square to 5/16" Hex Adaptor with Quick-Release Chuck
Wera - Socket Adapter: Square-Drive to Hex Bit, 1/2 & 1/4" - 01135268 - MSC Industrial Supply