The QD2 3.75 Honeycomb is a small size quad rear with a Ride Number of 4.6. Looking to turn your favourite Thruster set into a Quad? This pair of Quad Rears can be combined with any Futures front fins to suit your riding preference, board design and waves. With a symmetrical foil, these rears cater to fluid rail to rail surfing and speed. They will favour boards that have the rear boxes set off the rail, closer to the stringer.