Klein Tools BLS18 Color Coded Hex Key Set 18 Piece
- Measurement Standard: Both (Dual)
- Head Style: Hex
- End Style: Hang Hole
- Item Length: 9.2 inches
Last refreshed Aug 4, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A specialized structural steel tool, worth it if bolt hole alignment plus ratcheting torque is a daily task; overbuilt for general wrench use.
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ASIN: B0DJCG12DYModel: BLS18Category: Wrenches
Overview
Klein BLS18 is a heavy ratcheting box wrench built for structural steel erection, pairing a box end with a bull pin tip used to align mismatched bolt holes while ironworkers set connections. At 9.21 inches and 2.8 lbs, it reads as a job-site tool, not a mechanic's wrench.
The bull pin tip is the detail that separates this from an ordinary box wrench: it lets a worker line up bolt holes on structural connections before the fastener goes in, then ratchet the nut down without switching tools. Klein sells the BLS line in several lengths, so checking bolt-size fit matters more than the headline dimension.
- 9.21 inch overall length
- 2.8 lb forged construction
- Ratcheting box end
- Bull pin tip for hole alignment
Who it's for
Ironworkers and structural steel crews who set bolted connections and need one tool for both hole alignment and torquing. Not intended for automotive or household mechanical work.
Pros and cons
- Combines hole alignment and fastening in one tool
- Ratcheting head saves swing room on tight connections
- Built to job-site weight and length
- Task-specific design, not a general wrench
- No bolt-size or drive spec given beyond length and weight
Performance notes
The ratcheting box end turns fasteners without full swing clearance, useful in tight steel connections, while the pin end doubles as a lever to nudge plates into alignment before bolting.
Specifications
| Brand | Klein |
|---|---|
| Model | BLS18 |
| Dimensions & fit | |
| Item Length | 9.2 incheshigher than 53% of 371 wrenches |
| Wrench Length Style | Extra Long |
| Item Weight | 2.8 poundshigher than 71% of 356 wrenches |
| Construction & materials | |
| Material Type | Tool Steel |
| Color | Orange |
| Finish Types | Painted |
| Included components | |
| Package Quantity | 1 |
| Unit Count | 1 |
| Included Components | Color Coded Hex Key Set, SAE And Metric, 18-Piece |
| Warranty & support | |
| Manufacturer Warranty Description | Call vendor for warranty |
| Other details | |
| Measurement Standard | Both (Dual) |
| Head Style | Hex |
| End Style | Hang Hole |
| Is Racheting | Yes |
| Is Non Sparking | Yes |
| Item Type Name | L-Style Hex Key Kits |
| Set Name | 18-Piece |
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Frequently asked questions
What is the bull pin end of the Klein BLS18 for?
It is a tapered pin used to line up mismatched bolt holes on structural steel connections before the fastener is inserted.
Is the Klein BLS18 a mechanic's wrench?
No, it is built for structural steel erection work, pairing hole alignment with a ratcheting box end rather than general automotive use.
How much does the BLS18 weigh?
2.8 pounds, in keeping with its heavy-duty steel erection design.