Hutchins 5103 3" Hook Pad, Standard Type, for Models 3501, 503, 603, 703

Hutchins 5103 3" Hook Pad, Standard Type, Compatible with Models 3501, 503, 603, 703. Q: Is the Hutchins 5103 Hook Pad compatible with other sander models?. A: The 5103 Hook Pad is specifically designed for Hutchins models 3501, 503, 603, and 703.