Excellent product. The only small thing that I think could be improved is to make the 105 degree assembly smoother. Otherwise everything works as it should.
Pros
A set of high quality impact driver bits. Material: chrome vanadium steel. Fits snugly and securely in a drill chuck or hand screwdriver. This adapter kit is used to securely attach an extension to an existing tool. Provides extra length for access to many hard-to-reach places. The spring-loaded ball lock ensures a tight fit on the power head and prevents slipping during use.