The surface mount technology (SMT) adapter board system allows for easy implementation of surface mounts parts in through-hole prototyping applications. Never get stuck with a surface mount part when you need a through-hole one again.
All through-hole pins are on a .1" grid, great for most protoboards. Solid backplane on every part with built-in areas for decoupling capacitors. More SMT devices for much less than other companies sell for.