1-3/8" Round Knob with through hole. 5/16 x 18 internal thread.
Extra alignment plate for easy, accurate drilling of concealed-hinge cup holes on cabinet doors with the JIG IT Multi-Tool Rail Master Pack (31126, sold separately).
Woodworkers who prefer to use their routers mounted in a table will love the Leigh RTJ400. Unlike traditional dovetail jigs, the RTJ400 slides along the top of your router table, encouraging a comfortable upright posture, and eliminating the need to balance your router on the top of a narrow jig. It provides fast, accurate routing of through dovetails, half-blind dovetails and box joints. Like other Leigh jigs, the template for the RTJ400 is precision CNC machined from aircraft grade aluminum. Perfect joint fit is guaranteed and repeatable with the patented Leigh elliptical guide bushing. NOTE:Operation requires a 1-3/8'' Porter-Cable style insert ring to fit the Leigh eBush to your router table or router plate. Lets you create 5 sizes of through dovetails, 4 sizes of half-pitch through dovetails, 3 sizes of single pass half-blind dovetails, and 4 sizes of box joints (finger joints)Also capable of routing angled dovetails and end-on-end dovetails (splices), both straight and angledMakes precise joinery easy-just center the board on the template and guide the jig across the router table to rout the jointsOne template makes all three types of joineryIncludes clearly illustrated, step-by-step user guide and a DVD with helpful how-to videos