Suitable for 2.0L TDI engine from Volkswagen and Audi group. To clean the contact surface between the injector and engine head when making the replacing. Include cutter holder which can make cutter straight and correct to attach when cleaning. Insert the extension bar into the cutter for deep hole cleaning. Please also check our ebay store:http://stores.ebay.com/topautotoolsClick here to visit our ebay store! We Accept PayPal .