Summit Treestands Viper Pro SD Climbing Treestand, Mossy Oak Elements Terra Camo The Summit Viper climbing stand has been the number one climber for decades, and it just got better introducing the Viper Pro SD. The Viper Pro SD features the all-new QUICK DRAW PRO cable system for even faster and easier attachment to the tree. The QUICK DRAW PRO system has comfort grips built in as well as quick-connect triggers that make cable adjustments a breeze. Plus, retention pins in the QUICK DRAW PRO system can be removed to add cable or padlock for theft deterrent while attached to a tree. Next, is the Summit FasTrack system that allows users to easily add Summit Ultimate Hooks, Phone and Rifle Holder to the top frame of the stand. The Summit Viper Pro SD features the same strength and safety systems as the original Viper, such as SummitLOKT joints where all joints are locked into place before welding to reduce stress on the welds; RapidClimb Stirrups designed to keep the climbers boots securely attached to the platform while ascending and descending; and Summits Dead Metal sound dampening technology that fills critical parts of the stand with custom-engineered expanding foam. The Viper Pro SD also incorporates a new one-piece wrap-around armpad that fully covers the front rail and armrests for added comfort and sound-dampening properties. Hunters will recognize the same super-comfortable suspended seat that is now dressed in Mossy Oak Elements TERRA. The aluminum Viper Pro SD weighs in at 22 pounds, will hold up to 300 pounds and will attach to trees 8 to 20 in diameter. SPECIFICATIONS Stand Weight Limit: 300 lbs. Seat Frame Size: 26W x 37.50D Platform Frame Size: 20W x 36D Tree Diameter Range: 8-20.