Quick-clear jam release. Cylinder Valve firing mechanism provides quick response and rapid driving. Depth of drive adjustment. Stapler diameter is 16 ga, straight magazine angle, 1/4 in air inlet, operating pressure is 70 to 120 psi, weighs 4.4 lb and stapler capacity is 157. Drives 16 ga, 7/16 in crown Staples from 1 to 2 in length. Includes eye protector and Allen wrench for M5 screw.