Your Carl HD-530N is a workhorse, but the blade doesn't last forever. Once holes start looking torn or the punch drags through the stack, you need the HD-530MD. It's the purpose-built replacement drill for that exact model — drop it in and your heavy-duty punching is back to spec. No cross-referencing part numbers, no hoping a generic blade will do
| brand | CARL |
| model | HD-530MD |
| compatible_with | Carl HD-530N Heavy-Duty Hole Punch |
| category | Office Supplies |
| subcategory | Desk Accessories |
| type | Spare punch blade / replacement drill |
