Long life maintenance-free motor to keep from staining the work surface * Internal piston catch for consistent max power on every shot * Rear exhaust to keep contaminants away from work * Drives 18 ga. staples with 1/4-inch crown from 1/2-inch to 1-1/2-inch length; Tool-free depth-of-drive adjustment with detents for proper setting of staples * Included with stapler: 1,000 18-gauge 1-inch staples, 1/4-inch fitting, safety glasses, and carrying case