CONSTRUCTION: It is made up of Marine Grade Stainless Steel. HIGH QUALITY: Made of superior corrosion-resistant electrolysis 304 stainless steel marine heavy-duty spring latch barrel bolts provide long-term service even in a harsh environment. DIMENSIONS: Stainless-Steel Spring-Loaded Barrel Latch Bolt is 6 inches long; the base is approximately 2.83inches (72.0mm) x 1.57inches (40.0mm). FUNCTIONAL: Spring-loaded bolt can be locked in the open position turning lever allows the bolt to close under spring pressure. PACKAGE CONTENT: 1 Pcs Heavy-Duty spring-loaded barrel latch with Cradle (screws not included). And there are three sizes Available: large, medium, and small to choose from, 6 Inches is the medium size.