This bottom hinge kit includes components constructed of various materials, and the main hinge bracket comes in a chrome plated finish. The post-mounted gravity pivot hinge bracket fits on 1 inch thick posts and panels that have square cut edges. This bracket also features a 1-9/32 inch key dimension, and its pintle has an outside diameter of 1/2 inch The T-27 Torx security fasteners included with this item feature tamper-resistant 6-lobe security drives with center pins. This hardware is designed for use with partition hardware by General Applications.