High-Quality Steel Crafted from heavy-duty steel with an electro-galvanized anti-rust coating, ensuring long-lasting durability and structural integrity even in humid or high-temperature environments. Product Size Length: 2.3 inch(58.5mm) Width: 1.54 inch(39mm) Package Include: 2 fire extinguisher brackets, 4 screws, 4 soft iron washers, and 4 plastic anchors. Reinforced with internal stiffening ribs and dual-support hooks, securely holds extinguishers up to 9kg (20lbs). Note: Slight Size Variance: All dimensions are hand-measured; kindly allow for a 1-2mm variance. This does not affect functionality