RN46-RK Rebuilt Kit O-Ring Kit TVA6 Trigger Value 191777 Bumpe For RN46 RN46-RK Roofing Nailer Rebuild Kit Includes: RN46-1 O-Ring Kit × 1; TVA6 Trigger Value × 1; 191777 Bumper × 1 Fit Models: Bostitch RN46-RK RN46 Roofing Nailer. Return refund: If you have any questions, you can refund in full without any problems A brand-new, unused, unopened, undamaged item in its original packaging.