Part Numbers:
MXPERK00 – Ring with Knob/Folding 0: 1 3/4 in
MXPERK01 – Ring with Knob/Folding 1: 2 in.
MXPERK02 – Ring with Knob/Folding 2: 2 1/4 in.
MXPERK03 – Ring with Knob/Folding 3: 2 1/2 in.
MXPERK04 – Ring with Knob/Folding 4: 2 3/4 in.
MXPERK05 – Ring with Knob/Folding 5: 3 in.
MXPERK06 – Ring with Knob/Folding 6: 3 1/4 in.
MXPERK07 – Ring with Knob/Folding 7: 3 1/2 in.
MXPERK08 – Ring with Knob/Folding 8: 3 3/4 in.
MXPERK09 – Ring with Knob/Folding 9: 4 in.
MXPERK10 – Ring with Knob/Folding 10: 4 1/4 in.
MXPERK11 – Ring with Knob/Folding 11: 4 1/2 in.
MXPERK12 – Ring with Knob/Folding 12: 4 3/4
MXPERK13 – Ring with Knob/Folding 13: 5 in.
