Astro Pneumatic ADN14 Rivet Nut Drill Adapter Kit - Professional Nut Setting Tool for Metalworking & DIY Projects | Perfect for Automotive Repair, HVAC Installation & Home Improvement

Out of the box this is a very good tool. With a few DIY tweaks it can be a great tool. The tool as it comes works well but is not very smooth in operation. I decided to crack it open and check out the guts. Disassembly requires the removal of 1 Circlip (Outside) and 1 E-Clip (Inside). The internal components appear to be well made but the grease is horrible. It's the typical yellow chinesium fare that is marginal when new and gets waxy over time. I cleaned out all the stock grease and used liberal amounts of Lucas X-TRA Heavy Duty Grease: http://a.co/8wmRJvs Reassembled everything and it’s a night and day difference. Operation thru the entire range of movement is smooth as can be.The other tweak is to the driveshaft. The tool worked good using a Ryobi 18v cordless drill. I wanted to see how it would it work with a Ryobi 18v cordless impact driver. I was impressed with the difference. The impact drive having a shorter snout makes things less awkward. It also requires less hand strength and cinches the rivnuts down better. There is one issue with using the impact driver. The drive shaft will not lock into place as the machined groove is bit too far down the shaft. I used a Dremel with a cut-off wheel to short the end of shaft (See pics). Now with the tool locked into place it totally rocks and makes installing rivnuts a cinch.If you're installing a couple rivnuts here and there either drive tool works fine. If you're installing dozens of rivnuts the impact drive is the way to go. It’s faster, installs the rivnuts tighter and is much easier on your hand.