Includes one winding plug (one-piece) and one stationary plug. Centre distance of mounting holes: 87 mm and 100mm (W-Plug). Centre distance of M10 holes: 100 mm and 138mm (S-plug). The winding plug has two 3/8" set screws for fixing to the shaft. Stationary plug has a 50.8 mm hole for bearing placement. Max. Torque: 226Nm. Suitable for 1 inch (25.4mm) shaft. Max torque bolts 20Nm. (stationary plug (-S) + Winding plug (-W)). Material: Aluminium .Thread: Universal, max. 12mm Mark: None.