Features 【high quality】 This product is committed to high quality production, you can be assured that you will rive a brand new product. 【Scope of application】suitable for the nuts' removal of ER40UM type cutter bar, cutter handle and extension rod 【ER wrench features】simple operation, low price, high labor depth. 【Use of ER wrench】 When using, hold one end of the wrench with your hand. Then tighten clockwise. When loosening, rotate counterclockwise. 【For ER40-UM nut】Wrench opening is 58mm, suitable for ER40-UM nut Features: brand new and high quality Scope of application: suitable for the nuts' removal of ER40UM type cutter bar, cutter handle and extension rod ER wrench features: simple operation, low price, high labor intensity Use of ER wrench: tighten it, hold the end of the wrench with your hand, and tighten it clockwise. Loosen, rotate counterclockwise. Wrench opening is 58mm, suitable for ER40-UM nut Specification: Type: ER40UM Wrench Wrench opening: 58mm Weight: Approx.432g/15.2oz Package list: 1 x ER16M Wrench(only) Package List