Ehc (Electronic Hardware) 3489-1-B
ROUND KNURLED KNOB W/ LINE IND, 3.175MM;; Shaft Type:Round Shaft; Shaft Diameter:3.175mm; Knob Material:Plastic; Knob / Dial Style:Round Knurled with Indicator Line; Knob Diameter:18.288mm; Product Range:-; SVHC:No SVHC (27-Jun-2018); Colour:Black; Knob / Dial - Diameter Imp:0.72"; Knob / Dial Height - Imp:0.62"; Shaft Diameter- Imp:0.125"