These gray knobs are the same as the original 1/4 20 Yellow Knobs. The Gray 1/4-20 Seat Knobs are expected to be compatible with older versions of Dagger and Wave Sport kayaks (possibly some modern versions too). These knobs will fit kayaks with 1/4x20 thread screws (test your screw with a 1/4x20 nut from a hardware store). If your kayak is outfitted with metric screws select the Yellow M6 Knobs or the Red M6 Knobs.
Comes as a 2 pack of knobs. Compatible with 1/4-20 hardware. OUTKNOB