Irion America FX7-90 is a professional grade sealant gun that has a rotary carriage and an attached ladder hook. The handle is rubber-coated as well as the trigger. Irion America FX7-90 sealant guns have double slide bearings for smooth-running functionality. Irion America FX7-90 caulking guns are ideal for gunning high viscocity sealants and has a thrust ratio of 17:1. Irion America FX7-90 sealant gun offers multiple-strength thrust block and anti-corrosive performance. This sealant gun is designed for cartridges up to 10.3 fluid ounces.