The B series firewall fitting has a 1 inch aluminum ball held in place by 2 stainless steel pressure plates. It has a swivel angle up to 50 degrees from straight and is held to the firewall with 6 #4 screws.
Assembly weighs only 1.0oz-1.3oz ( .06lb-.08lb) depending on ball hole size.
Ball hole sizes available are .125, .188, .218, .240, .250, .260, .330, .375, .438 and .500.
