@ramonamarshall20014: When the grease gun won't push grease through, don't assume the gun is the problem. Hardened grease can pack inside the fitting passage and stop things up. This heavy-duty grease unclogger uses a spiral press to work through the buildup, with different adapters for M6/M8/M10 fittings. If you're maintaining tractors, loaders, trucks, or other equipment, this is one of those tools worth keeping in the toolbox. #GreaseFittingCleaner #GreaseFittingTool #GreaseGunTools #HeavyEquipmentTools #EquipmentMaintenance