I have some of the old yellow handled long shanked ball drivers that GrayBeard mentioned. They also came with red handles, one being fractional and the other metric. I keep those hanging on the side of my flight box. But the ones I use at home to build with are the RTL ones I mentioned earlier. I believe they are Bondhus. The weird looking yellow handled and red handled puppies were purchased at a local hobby shop and I have no idea what the brand is, but I have had them since the early '90s, so I guess they are decent quality. I've never had one slip or fail.