Bosch Tools line of pneumatic nail guns feature many patented technologies which make the air nailers the strongest, lightest and most reliable nailers in the industry. Full Force Technology Engineered to direct 100% of the energy to the fastener by eliminating wasted power and space. Learn more here. Bosch Armor Protects from job-site abuse and abrasive shingles. Tool-less Adjustable Depth of Drive Adjust depth of drive on tool. Dry Fire Lock-Out Avoids damage to work materials and internal components by preventing blank firing. Tool-less Adjustable Shingle Guide Enables user to change exposure dimension for different shingle types. In-line Self-Cleaning Air Filter Keeps debris from the valve and o-ring improving life of the tool. Single Action Side Load One Step Nail Re-load.