The Q550 Series 18 gauge pneumatic nailer from Primatech, which features a dual-action continuously adjusting base plate, has been designed for installing 3/8” to 5/8” solid hardwood and engineered products. The lightweight nailer uses 18-gauge 1-1/4” and 1-1/2” Primatech L-type nails. Additional features include the new tool-free G2 air valve, hidden safety, and easy to load nail channel. A 2-1/2-lb. Mallet is also included.