Size Chart

Size Measurement Inside Diameter Circumference
1 inches 2 inches 6 1/4 inches
2 inches 2 3/8 inches 7 1/2 inches
3 inches 2 1/2 inches 7 7/8 inches
3 inches 2 3/4 inches  8 5/8 inches

 

Size Measurement Inside Diameter Circumference
1 millimeters 52 mm 163 mm
2 millimeters 58 mm 182 mm
3 millimeters 64 mm 200 mm
4 millimeters 70 mm 220 mm

 

All measurements are approximate. Select the size number that is closet to your measurement.