PRODUCT DETAILS, ER16M wrench opening is 15mm, suitable for ER16M nuts, weight: approx 73g / 2.6oz. GOOD FEATURES: simple operation, good value for money, long lifespan and high work intensity. INSTRUCTIONS FOR USE: If you want to unscrew the nut and then turn it counterclockwise, instead hold the end of the wrench with your hand to tighten it. THE ER WRENCH is suitable for removing nuts from cutter bar, extension rod and handle type ER16M. Specification: Type: ER16M wrench Wrench opening: 15mm Weight: approx. 73 g / 2.6 oz: Package list: 1 x ER16M key