Kingston Beveled Series, Chrome Plated wall mount frameless shower door hinge with full back plate. This jumbo version of our standard rotunda hinge provides the maximum rated capacity of any shower door hinge on the market. Solid Brass construction with all moving parts (pins and springs) in precision machined stainless steel. These beveled edge hinges are self-centering when within 15 degrees of closed position. 90 Degree in and out swing. Open/Close tested to at least 50,000 cycles. For use with 3/8" - 1/2" Tempered Safety Glass. Rated at 50 Pounds per hinge (2 hinge maximum 32" door width - 3 hinge maximum 36" door width). Requires either standard "Mouse Ear" or square corner glass cutout. 3 Year Warranty. Glass clamp plate size 2-1/4" x 3-15/16". Mounting back plate size 2-1/8" x 3-15/16".