If your disposers mounting system utilizes 3-bolts for installation you have a 3-Bolt Mounting System.
Typically 3-BOLT MOUNT COLOR SINK FLANGES are compatible with all AMERICAN STANDARD, BARRACUDA, BONE CRUSHER, CALORIC, ELIMINATOR, FRIGIDAIRE, GIBSON, INSINKERATOR, KELVINATOR, KENMORE, MAGIC CHEF, MR. TOOTER, MODERN MAID, MONTGOMERY WARD, PHCC, SINKMASTER, TAPPAN/O'KEEFE, WASTE KING, WASTE MAID ELITE, WHIRLAWAY, WHIRLPOOL, WHITE-WESTINGHOUSE disposers.

If your disposers mounting system is threaded you have Speed Master Mounting System.
Typically THREADED COLOR SINK FLANGES are compatible with all COMMODORE, TITAN, GE, WASTEMAID, ECO LOGIC disposers. However, some of these brands may feature 3-Bolt versions. Please double check your flange installation if you are not sure which mounting system you have.