The Twist Gullwing Top is a great addition to your slingshot. Featuring a 1.25″ tubing with an outside diameter of 1.66″ and an inside diameter of 1.38″. Frame is made from 6063 Aluminum in our state of the art CNC 2 axis bending machine and TIG welded proudly by hand in the USA. Removable tinted glass is made of Lexan and provides shade and clear visibility through top of roof. Wings open/close for entry.