Impact Drive Shank Chuck Quick Connect Adapter,Hex Shank Magnetic Extension Release Bits Holde,Extension Set for Screws (4 Pcs 1/4 Inch Hex Shank)

They are kind of loose, I thought they would be tighter locking in, but they work

This product makes my job so much easier. I can rapidly change fittings easily without removing the bits from the drill shank

Cheap!