Hygienic USIT Knob Handle Type Mushroom Handle Material 316L Stainless Steel Mounting Type Internal Threads Thread Size M10 Handle Dia 40.00 mm Base Dia 22.30 mm Overall Height 40.00 mm Screw Length 20.00 mm Tap Type Blind Hole Standards RoHS Thread Type Metric Features Easy Cleaning is Ensured It doesn t Matter in which Position the Mushroom knob is Mounted Dirt and Residue from Products or Cleaners Seldom Adheres