Manufacturer Part Number: 21120|Knob Type|LobedType|Knob Material|AluminumNumber of Points|4Head Diameter (mm)|Head Diameter (Inch)|3Head Diameter (Decimal Inch)|3.0000Head Height (mm)|Head Height (Inch)|11/16Head Height (Decimal Inch)|Stem Size|Thread Length (Inch)|1-1/4Thread Length (Decimal Inch)|Thread Length (mm)|Material Grade|319Top Hole Size (mm)|Top Hole Size|Spoke Diameter|3Hole Size|1/2-13Hole Depth (Inch)|1-1/4Hole Depth (mm)|Hole Depth (Decimal Inch)|Hub Diameter (Inch)|1-3/8Hub Diameter (Decimal Inch)|Hub Diameter (mm)|Hub Height (Decimal Inch)|Hub Height (mm)|Hub Height (Inch)|Overall Height (Inch)|1-3/4Overall Height (Mm - 5 Decimals)|Overall Height (Decimal Inch)|Finish|Screw Length (mm)|Color|Set Screw Size|Head Thickness|11/16Overall Length (Inch)|Thread Size|Length Under Head (Decimal Inch)|Product Service Code|5340UNSPSC Code|31162801