Sizes of plungers cylinders must match exactly. If several cake donut varieties are being made, many people find it convenient to use one size for all plungers, and to use them with one cylinder of the same size.
Plungers are available for ring donuts, sticks, 'old fashions', crullers, krinkles (pon de ring) and more. A plunger and a cylinder work together to form a cake donut. Any plunger used must be matched by a cylinder of exactly the same size.
The cylinder inserts easily into the bottom of the hopper.