Designed to fit casement windows and to match the products in our Monkeytail range. These espagnolettes are handed, so it's important to make sure you choose the correct hand. From the inside looking out, if your window is hinged on the right hand side then a right hand fastener is required and vice versa. The fastener has a locking mechanism by way of a grub screw. Our handmade fasteners are forged from mild steel, giving them unrivalled strength and an abundance of character. Overall Size: 112mm Handle Length:89mm x 70mm Fixing Plate Size: 61mm x 14mm x 5mm Mortice Plate Size: 77mm x 20mm x 2mm Hook Plate Size: 56mm X 20mm x 4mm