Special Order: KR104=Adapter1/4TO1/8 Primary Product Material: Brass Shaft Size: 3.17 mm Shaft Size: .125 in Product Diameter: 6.35 mm Product Diameter: .25 in Brass 3.17 mm .125" 6.35 mm | Switch Knob | Part Number: 1825620-1 | Internal Number: 1825620-1 | Alias Number: KR104 | TE Connectivity | ALCOSWITCH