This adapter is perfect for use on trucks, vans and RVs. For converting jaw-type lube couplers to steel needle points. It dispenses fine line of grease through the needle nose and includes both small and large sleeves to fit all standard couplers. Overall length 7-1/8 inch, tip diameter .046 inch, body diameter .250 inch. For hand operated grease guns only. Product Features:The product is needle nose AdapterEasy and simple use kitPerfect for use on trucks, vans and RVsFor converting jaw-type lube couplers to steel needle pointsDispenses a fine line of grease through the needle noseIncludes both small and large sleeves to fit all standard couplersFor hand operated grease guns only