The Makita AT1150A is a 7/16 inch 16 Gauge Medium Crown Stapler. The top-loading magazine allows user to quickly load 16 gauge staples varying in length from 1 inch to 2 inch. The quick release cam-lock opens guide assembly to easily clear jammed staples, minimizing downtime. The built-in air filter minimizes dust and debris from entering tool and hook allows tool to remain close-by but never in the way. Its rugged aluminum magazine has large holding capacity (up to 140 staples).