Makita B-68476 1/2" Drive Adapter to 1/4" Hex Attachment for Impact WrenchIt's what's INSIDE that counts. 1 2" Drive Adapter to 1 4" Hex Attachment for Impact Wrench Convert your Impact Wrench into an Impact Driver! SpecificationsMAKITA B 68476 Bit Adapter Hex N2 Mak2 1 2 sq 1 4Usage: Your 1 2 sized hex can now be converted and used as a 1 4 size with this Makita adapter "Plug and play" type of item, very easy to use Durable, trusted brand Attached firmly