Features and Benefits: * Perfect for use on trucks, vans and RVs * For converting jaw-type lube couplers to steel needle points * Dispenses fine line of grease through the needle nose * Includes both small and large sleeves to fit all standard couplers * For hand operated grease guns only Accessory products for your grease gun make your greasing job easier to perform. Overall length is 7-1/8", tip diameter is .046", body diameter is .250.