Knob W490 SizeA: diameter W490 W490 item# sizeA price T-W490-015 5/8 inch $3.80 T-W490-018 11/16 inch $4.20 T-W490-022 7/8 inch $4.80 T-W490-025 1 inch $6.80 T-W490-030 1 1/8 inch $9.60 END