Used these screws with the Senco auto-screw gun to attach 3/4" plywood to the stud walls in my new work shop, as well as cabinets & shelves above the plywood walls (10' ceilings),  Had never used an auto-screw gun before but was very impressed.  You kinda got to get the hang of it.  Have to screw pretty much straight in.  Don't hesitate.  Once you start, keep going.  If it doesn't finish the job, just go on to the next one and come back with another driver to finish.  I drove over 1,000 screws.  I like the screws a lot.  They are not threaded all the way to the head which is a good thing. In general, Senco is known to offer quality products. This was no exception.