Maxx-ER (D/C) QuickChuck 90 Degree Adapter Stainless 20596 UnoSetMaxx ER QuickChuck 90 Degree Adapter Stainless is 100% cross compatible with EROWA ITS ER 020596 Compatible Extension arm UnoSet The extension arm UnoSet with Maxx ER QuickChuck is suitable for the accommodation of workpieces and electrodes that have to be machined in a vertical and in a horizontal position. Accuracy: Static repeat ability accuracy is 0. 002mm Positional accuracy to data. 004mm Version Maxx ER 90 Degree Adapter Chuck Stainless 20596