Not to be confused with a Garter Bar , a decker comb is a multi-prong tool similar to a Multi-Prong Transfer Tool used to transfer large numbers of stitches.

Garter Bar: Transfers stitches AND can be used to turn and rehang the stitches back on the needles
Decker Comb: Removes stitches from the needles and allows easier transfers (example: decreases across the row)