Spec1: with Double clamshell and straight line function
Spec2 : 5mm ruler
Quilting template, curve & wave (serpine),
clampshell (half circle) on top is 3" outside diameter to create half circle (clamshell) in 3-1/2" and the one on the bottom is 2-1/2" inside diameter creating half circle (clamshell) in 2" diameter
Arragnt use this product MA-QT-CVW with following.
5mm = with MA-RUFT-HS-NS Free motion foot