Knob W425 SizeA: diameter W425 W425 item# sizeA price T-W425-015 5/8 inch $6.00 T-W425-018 11/16 inch $6.20 T-W425-020 3/4 inch $6.80 T-W425-022 7/8 inch $7.20 T-W425-030 1 1/8 inch $9.80 END