There are 2 mace ball options for ProMace. There are only subtle differences between them.

It is essential that the correct ball is used.

ASTM D3939
JIS L 1058

  • Stock code: 794-772
  • Screws are almost flush with the face

VDA 230-220

  • Stock code: 794-773
  • Thinner chain
  • Screws are recessed / sunken

For images detailing the differences between the two balls, please download the PDF document.