Designed for the packaging industry, the Arrow T50OC Outward Clinch Staple Gun crimps staple ends outward for use in demanding packaging applications. Proudly made in the USA, it utilizes a chromed all steel housing, jam-resistant mechanism, powerful coil spring, and hardened steel working parts that will stand up to the toughest packaging jobs. The staple viewing window shows operators when staples are running low. Uses 3/8-inch,1/2-inch, and 9/16-inch sizes of Arrow T50 heavy duty staples..