This specially designed bucking bar is required on the Van's Aircraft RV-10 and RV-14 for riveting inside the elevators. The bar dimensions are call out in the RV builders plans pages 9-12 of the control surface section. The bar measures 1" wide X 3/4" tall X 14" long. Both ends of the bar have machines angles per the plans - one end has a "V" double angle, and the other end has a single angle. Both ends are used for separate riveting tasks. 3 lbs (1.5Kg) shipping weight.