Early A body Brake SprAng Tool

Here is the description of the KD 297 and KD 270 brake tools.
KD 297: A must for removing and replacing retaining springs on many Valiants, Falcons and Comets from the 1960's. Easy to use. Simply push tool into spring and twist to disengage. Keep left hand on the back of clip to keep it from dropping as spring is removed.
KD 270: This tool is designed to quickly remove and replace Lockheed total contact brake shoe return springs on 57, 58, 59 Chrysler Dodge and Plymouth cars.
Information was obtained from old tool catalogs.