The AllPoints Foodservice Parts & Supplies 1021167 is a durable floor sink drain lock designed for reliable performance in commercial kitchens. Made from high-quality stainless steel, it features a 4-inch diameter with an outer diameter of 4 3/8 inches (111 mm) and a depth of 2 inches (51 mm). This hybrid drain lock includes tamperproof T-45 screws for enhanced security and ease of installation. For installation and removal, use the FMP# 142-1605 screwdriver. NSF certified for safety and sanitation, this drain lock is an essential accessory for maintaining efficient drainage in foodservice environments.