crownwall knurled knobcrown wall knurled knobSelectQuantity*Add to QuoteSpecs Code Screw Size Centres Length Projection Bar Thickness Finish FIL4494BLK M4x22 30mm 30mm 25mm N/A matt black FIL4494BB M4x22 30mm 30mm 25mm N/A brushed brass FIL4494BN M4x22 30mm 30mm 25mm N/A brushed nicke