Woodhaven 783 Inch Shelf Pin Jig 783 has 31 holes spaced 1" on center and 1-1/2" from the edge. Can be used to make 5mm or 1/4" shelf pin holes with appropriate bit. This jigs longer length lets you use it on taller cabinets without having to reposition it as frequently. Lets you rout or drill either 5mm or 1/4" shelf pin holes. Drilling is easiest if your cabinet is assembled. Routing is faster and produces a slightly cleaner/squarer hole on unassembled parts. Jig accepts 3/8" OD self-centering drills (order separately), or a guide bushing & router bit (order separately). Made of tough 1/4" thick phenolic. Get our 5mm (761N nickel) or 1/4" (762B brass) shelf pins to finish the job. Lifetime guarantee against defects in material or workmanship. Made in the USA!