Snap Lock Four Knob, 1/2" Thread Size, 2-1/2" Dia., Innovative Components, Mfr#: GNH7-HEX4P7----

Hand Knob, Handle Type 4 Point, Handle Material Plastic, Mounting Type Hex Hole for Bolts/Cap Screws/Nuts, Thread Size 1/2 In., Handle Dia. 2-1/2 in, Base Dia. 63/64 in, Overall Height 1.13 in, Inside Dia. 1/2 in, Tap Type Through Hole, Color Black, Features For Applications where the Knob must be Completely Removed after the Releasing Operation and Refitted Very Rapidly for Re-Clamping, Seal Material Not Applicable, Finish Matte