I needed a replacement drain plug for my Mission 50 and this kit had everything: the plug, washers, drain caps, nut and seal ring. It fits the Mission 50, 72 and 124 Qt as well as the Leeward 50, 72 and 124 Qt, so it works across both cooler lines. Installation was straightforward and the seal ring seated properly with no leaks after refilling. Good to have spare washers included too. Solid little part that does exactly what it should.