Designed to fit casement windows and to match the products in our Shepherd's Crook range. These fasteners 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 locking mechanism operates by way of grub screw. Our handmade fasteners are forged from mild steel, giving them unrivalled strength and an abundance of character. Overall Length: 133mm Handle Size: 106mm 114mm Fixing Plate Size: 71mm x 17mm x 4mm Mortice Plate Size: 77mm x 20mm x 2mm Hook Plate Size: 71mm X 17mm x 4mm