Hand Knob Handle Type Wing Handle Material Stainless Steel Thermoplastic Mounting Type External Thread Thread Size #8-32 Thread Standard UNC Handle Dia 28.00mm Base Dia 12.00mm Overall Height 15.00mm Screw Length 20.00 mm Overall Length 1.38 in Includes - Standards RoHS Thread Type UNC Color Black Features Durability and Strength Ergonomic Design Finger Specific Precision Performance Finish Matte