Stanley TR150HL SharpShooter Heavy Duty Staple Gun with Anti-Jam MechanismThe Stanley SharpShooter Heavy Duty T50 Staple Gun features an easy squeeze handle that helps reduce hand fatigue. It has a Hi Lo power lever for adjusting between hard and soft materials. The housing is made of heavy duty aircraft aluminum for durability. Easy squeeze handle reduces hand fatigue Hi Lo power lever for hard and soft materials Heavy duty aircraft aluminum housing for long lasting durability Anti jam mechanism saves time on the job