This knob controls the washer machine cycle settings. This part does NOT come with installation instructions. This Washer Machine Control Knob is compatible with the following GE devices: WCSE3100A1AA, WCSE3100A1WW, WCSE3100A2WW, WCSE4230A0AA This item is NEW! Don't see your model number? Send us a message as we are happy to help! This knob controls the washer machine cycle settings. This Is A Stock Item! Don't See Your Model Number? Send Us A Message! Washer Machine Control Knob Compatible With GE Model Numbers WCSE3100A1AA, WCSE3100A1WW, WCSE3100A2WW, WCSE4230A0AA Compatible models WCSE3100A1AA, WCSE3100A1WW, WCSE3100A2WW, WCSE4230A0AA Compatibility Lazelle Material Plastic Brand Lazelle Count 1 Model WCSE3100A1AA, WCSE3100A1WW, WCSE3100A2WW, WCSE4230A0AA Dimensions 8.00 x 2.00 x 9.00 in Has written warranty No