Hand Knob Handle Type Wing Handle Material Stainless Steel Thermoplastic Mounting Type External Thread Thread Size 1/4 In.-20 Thread Standard UNC Handle Dia 28.00mm Base Dia 12.00mm Overall Height 15.00mm Screw Length 30.00 mm Includes - Standards RoHS Thread Type UNC Color Black Features Durability and Strength Ergonomic Design Finger Specific Precision Performance Novo Grip Finish Matte