Hammerhead part # 6.000.124
American Sportworks part # 6.000.124
Common applications include:
American Sportworks 6150 Blue Lightning
American Sportworks 6152 Zircon
American Sportworks 7150 Quantam
American Sportworks 7151 Carbide
American Sportworks Carbide 150cc
Coolster GK-6150 150cc