quick oil drain valve
 

So, my drain plug is more or less stripped (not the threads, but the head, go figure). Anyway, instead of buying a new drain plug from the dealer (autozone doesn't have one in 15mm), I wanna buy one of those quick change oil valves, like the ones here: http://www.quickoildrainvalve.com/ . Does anyone have any experience with the valves, or that company? All the valves they have are supposedly 14mm, but it's a 15mm drain plug, is that a problem?

David