For Mid-Arm and Long-Arm Machines. Handi-Sized half circles are easy to grasp and control. Right-sized cut to compensate for 1/2in hopping foot. Half circles cut in 1in increments (1-1/2in to 11-1/2in) for quilted circles from 2in to 12in.
Here is a great video kn how to use the 1/2 circle quilting templates: