Hey, I purchased a pair of the plastic push-rivets, or whatever the hell they are, at Lowes this morning. They say they are 1/4" diameter, but they fit the lower cowling under the bike, where my originals deteriorated the soonest. $1.04 for a two-pack. If there are two sizes, then these are the larger of the two. I noticed also that there were the same type of plastic rivets available that had a threaded screw, instead of a push pin. Nice to know that I can buy them from Lowes instead of Honda, or wait for them from Calif.