Cam Belt Tensioning Tool T50 Star Bit - 1/2in.Dr Allows access to the tensioner adjuster on Renault K4M / K4J 1.4 and 1.6 petrol engines. Applicable to Renault Megane II | Scenic II | Grand Scenic II May be used with 1/2in.Dr Adaptor and Ratchet OEM Code : MOT1368