The Trend Skeleton Hinge Jig is a 2-part, adjustable portable template set designed for recessing hinges in wooden doors and frames with a router. It is easy to use with minimal setting-up time, ensuring that the job can be completed accurately and quickly. It is ideal for use on-site and in joinery shops to increase productivity with excellent results. The jig has fully adjustable apertures for fire door requirements and renovation work. It is ideal for fitting a new door into an old frame and is suitable for timber-based doors and square butt hinges. The jig is supplied with a carry case, bradawls and a special 16mm guide bush. Specifications: Pre-set hinge sizes: 20mm, 25mm and 30mm. Hinge sizes possible: Minimum length: 67mm (2.5/8in). Maximum length: 127mm (5in). Minimum.