PortaNails Portamatic Twin Trigger 20 is designed to install 1/4" to 7/16" engineered and solid tongue and groove flooring. This 20-gauge flooring stapler offers a dual trigger for optimum comfort. For positioning behind the tool, use its conventional trigger. When positioning in front of the tool, use the secondary trigger located at the rear of the tool. Both triggers provide the optimum positioning for your trigger finger and ensures the proper firing position for the ultimate in precision, comfort, and firing accuracy. A tool-free adjustable shoe is featured which accurately configures for 1/4" to 7/16" thick flooring and delivers a 1" x 20-gauge 3/16" crown staple. Built for the pro user with a steel cylinder and metal parts, piston, driver blade, and a built-in safety that helps to prevent accidental firing until the tool is in the proper position. A sturdy carry case, safety glasses, wrenches, and lube oil are included.