The Bostitch BT1855K 18 gal brad nailer will drive 5/8 to 2-1/8 in 18 gal brad nails and is loaded with great features. Its oil-free design requires no maintenance and prevents stains on work surfaces, while the swivel air fitting with filtered air inlet increases maneuverability and improves engine durability. The selectable trigger system allows for easy conversion between sequential or contact modes. The ultra-quiet rear exhaust directs air away from the user and the reversible belt hook with integrated pencil sharpener allows for ultimate convenience on the job site.