Used on all Roll Marking Attachments that use the following Power Paks: 550, 560, 570, 580, 583, 588

541 Retainer accepts the following type sizes: 1/16", 3/64", 3/32", 1/8", 5/32", 5/64", 3/16"

For characters to be top-to-collet use 1035 as starting cam. For bottom-to-collet use 1034 as starting cam.

Note: The starting cam must use the dowel pins supplied. Failure to do so will result in damage to the type.