Bostitch U/SX150K-1 Factory-Reconditioned 1-1/2" 18-Gauge Oil-Free Stapler Kit. Features Lightweight magnesium design for added durability Oil-free operation requires no regular maintenance and eliminates the risk of oil stains Ultra-quiet rear exhaust directs air away from the user Adjustable depth guide sets nails to desired depths quickly and conveniently. Includes 1-1/2" 18-Gauge Oil-Free Stapler Kit - U/SX150 (1000) 1" Staples 1/4" Air Fitting Carrying Case.