This TONE Tools Japan Motorsport 10mm Box End Wrench To 1/4″ Socket Adapter [RA-2] is an excellent addition to your automotive tool collection. Crafted and imported from Japan and made with high-quality materials. This unique adapter converts any 10mm box end type wrench ratcheting or non ratcheting types into 1/4” inch square driver. So, you can get into tighter spaces and have the flexibility of using sockets due to an overall slimmer profile. See photos in my listing for how it works. I am a U.S. based seller so no need to wait long for overseas shipping from Japan for this authentic item. Thanks, Hero83