Our large bore rivet guns are heavy hitting to handle those larger riveting jobs that are beyond the capacity of smaller .401" shank rivet guns. Excellent for driving rivets up to 1/4" diameter. Completely interchangeable with Chicago Pneumatic guns, and has a two-stage trigger. Accepts .498" shank rivet sets and attachments, but we’ve also included at no extra cost a .401" shank adapter (p/n SR498401) that allows you to use .401" tooling. Carries the ATS Pro Series Lifetime Warranty 5 lbs (2.5Kg) shipping weight.