Belshaw donut depositors (sometimes called 'donut droppers') are legendary for their precision and smoothness of operation - even after years of use in harsh conditions. Type B and Type F are similar and use the same set of plungers. Type N is used only as part of a Cut-N-Fry donut system and has a separate set of plungers. Type K makes perfect donuts but is handheld and for occasional donut makers only.
UPDATE: Now Belshaw has a new depositor for Yeast Raised donuts: the Type F-YRD Depositor. Click below to find out more!