Screw in the 2oz tube of Wonder Lube 1000 Plus lube (Works with Part #OX002 ONLY). Place the Maxi Ball in the hole. Squeeze the lube. Store for later use OR while still in the Maxi Luber, place the end of the lubed Maxi Ball over the barrel, and use a ball starter to put it in the barrel. Great for in the field or range. Evenly lubes Maxi Balls to increase accuracy. FeaturesLightweight and mess free designLubes Maxi balls evenlySqueezable tube