TowSmart Class III "X" Mount Starter Kit with 2 in. Ball and 5 8 in. Standard Pin, 3 1 4 in. Drop x 2 in. Rise 5000 lb. Drop Cloth industrial NPT swivel fitting rotates industrial NPT swivel fitting rotates 360 ° for maximum accessibility in tight spots Impact driving mechanism drives a wide variety of bulk nail sizes with ease The right tool for the job: we're committed to providing outstanding value Fastener Depth Control Returnable 180 Day Air Tool Type Air Nailer Kit Nailgun Angle 21 Cordless Corded Corded Maximum Fastener Size 3 1 2 in Reconditioned No Minimum Fastener Size 2 in Nail Gauge 10 Minimum Recommended Operating Pressure (psi) 70 Condition New Included Case The lockrail functions as a built in wrench preventing the hitch ball rotation during installation or removal from the X Mount Ball Mount Each X Mount can be used in either the drop or rise position depending on your requirement when towing