Seymour DG-100FG Post Hole Digger, Fiberglass Handles Review (2026)
By The DIYPicks Team · Updated July 2026
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- Fence posts
- Mailbox posts
- Deck footings
The correct tool for fence, mailbox and deck-footing holes: a clamshell digger pulls a narrow, deep core so the post sets straight with less concrete. A round-point shovel can't make a hole this narrow or clean.
Pros
- Fiberglass handles absorb shock and won't rot or crack like painted wood handles
- Scissor jaws pull a clean narrow core so posts sit deep with minimal concrete
- Homeowner-friendly price for a genuine forged-jaw digger, not a stamped import
Cons
- Bolt/rivet pivot can loosen over time and needs occasional tightening
- Struggles in rocky or heavy clay soil without a companion digging bar
- Single-purpose tool that only makes narrow holes, nothing else
Specifications
| Type | Clamshell post-hole digger |
|---|---|
| Blade | Forged steel twin jaws, riveted pivot |
| Handle | Twin fiberglass handles, ~48 in |
| Grip | Two long straight handles (scissor action) |
| Best for | Digging narrow deep post holes |