Description Description Hide Show Available Sizes Small The Jlb-03 is the smallest of the two leader boards measuring 3-3/4″ X 8″ making it work well with smaller hooks and jigs and pre-tied leaders. It also allows you to pre-load your tackle and you’re already organized when you hit the water. When used with a Plano 2-3715 you’ll have a little extra room for your leader spool, swivels, and scissors or whatever you choose. Plano box found here (Half-Size): https://fishfield.com/products/prolatch-open-compartment-stowaway-box-3700.html Medium The JLB-04 is the medium-sized board. Measuring 5 ” X 8″ it accommodates larger hooks and longer leaders. The problem for many of us is storing long leaders with multiple hooks, well problem solved! The Jig and leader boards can handle just about anything with a hook including trebles! From pan-fish to walleye, salmon, steelhead and numerous others species this product isn’t fancy or tricky it just flat works and it stores easily! Leader board fits perfectly into the Plano 2-3715 box. Plano box found here (Half-Size): https://fishfield.com/products/prolatch-open-compartment-stowaway-box-3700.html Large The JLB-06 was born out of requests from several Great Lakes Boat Captains. T hey wanted a larger board for big water that would allow them to hold trolling flies and meat rigs and while fiting the Plano 2-3731. The JLB-06 measures a hefty 7 ” X 13 ” with 17 slots to hold most anything you have. Fits inside the Plano Prolatch Open-Compartment Stowaway Box – 3700 DEEP found here: https://fishfield.com/products/prolatch-open-compartment-stowaway-box-3700.html