
This is a mix of 3/8 and 1/2 drive. 5/8, 9/16 and 1/2 are all 1/2 drives. All others 3/8. Overall the quality is as expected from Bondhus, my only criticism is that they have some horizontal play in the sockets. I've tried pulling them out by hand and they don't seem to come out, so I'm guessing a tiny dab of Loctite would fix that. Overall I would recommend them to my colleagues. Aside from slipping, they seem to be of the same quality as my protos.