Description Acoustic KAT Text Knob KAT-GREY Plastic Knobs, Indicate mark, Grey Material: ABSInstallation : push onOutside dia : 17.8 m/m Available shaft : 18 spline and 24 splineOverall height : 16.4 m/mApproximate weight : 1.1gIndicator : white line Assy No.990406 Minimum Order Quantity : 100 pcs