ISO-10303-21; HEADER; /* 7520-01-554-9540 Retractable Permanent Marker */ ENDSEC; DATA; /* NSN 7520-01-554-9540 FSC 7520 */ ENDSEC; END-ISO-10303-21; Segal Supply — mock CAD asset SKU: 7520-01-554-9540 Name: Retractable Permanent Marker Format: STEP Standards: NSN 7520-01-554-9540, FSC 7520 Generated: 2026-06-18T21:50:08.646Z NOTE: placeholder geometry for demonstration. Production assets stream from the CAD repository behind this same URL with DATA_SOURCE=live.