My extension collection (1/4, 3/8, 1/2 and some 3/4) includes USA and China Craftsman, some SK, Proto, Husky, Kobalt, Gearwrench, older Tekton and Armstrong. Have both chrome and impact, some wobble sets in chrome, and some locking sets in chrome. The older tekton ones (both impact and chrome) are kind of nice, finish not great on the older chrome one, but decent. I would not hesitate to but their newer version.