PRODUCTS
4139 Invertible Ratchet Handle (30 Teeth) – ½” Drive
4139 Series: ½” Drive Professional 30-Tooth Invertible Ratchet Handle
- 4139 Invertible Ratchet Handle, 30 Teeth, 1/2″ Drive
- 4139 可翻轉棘輪扳手，30齒，1/2″ 驅動
- 4139 可翻转棘轮扳手，30齿，1/2″ 驱动
- 4139 Umkehrbare Ratsche, 30 Teeth, 1/2″ Antrieb
- 4139 Cliquet inversable, 30 Teeth, carré 1/2″
- 4139 Carraca invertible, 30 Teeth, cuadro 1/2″
- 4139 Grzechotka odwracalna, 30 Teeth, napęd 1/2″
- 4139 مفتاح سقاطة قابل للعكس، 30 Teeth، درايف 1/2″
- 4139 ด้ามฟรีแบบกลับทิศได้ 30 Teeth ไดรฟ์ 1/2″
Invertible Ratchet Handle (Model 4139) is a high-torque manual driving tool engineered for the rigors of industrial maintenance and heavy-duty mechanical service. Manufactured by Hans Tools, the Invertible Ratchet Handle utilizes a 30-tooth internal gear system that prioritizes structural strength over incremental swing arc. This makes it the preferred choice for technicians working on large-scale fasteners where peak torque application is more critical than fine-space ratcheting. Forged from premium Chrome Vanadium (Cr-V) steel and featuring a high-polish finish, this tool is a core asset for utility contractors, refinery maintenance crews, and agricultural mechanics.
| ITEM NO. | TEETH | D (mm) | T (mm) | DIN N．m | L mm/inch |  g |  pcs |
|---|---|---|---|---|---|---|---|
| 4139 | 30 | 43 | 22.5 | 512 | 275mm/10-7/8" | 600 | 5 |
Feature
- Invertible ratchet design for fast direction switching in service work.
- 30 Teeth mechanism balances durability and dependable engagement.
- 1/2″ drive platform aligns with mainstream heavy-use socket systems.
- Standards shown on page: DIN 3122 / ISO 3315 and DIN 3123 / ISO 3316.
- Portfolio clarity: keep naming format consistent as “Teeth” across all ratchet pages.
Q1. How many Teeth does 4139 have?
A1. 4139 uses a 30 Teeth ratchet mechanism.
Q2. Is 4139 a 1/2″ drive ratchet handle?
A2. Yes, it is a 1/2″ drive model.
Q3. What does “invertible” mean on 4139?
A3. It indicates a reversible/invertible ratchet function for direction change during tightening and loosening.
Q4. Which standards are listed for this model?
A4. The page lists DIN 3122 / ISO 3315 and DIN 3123 / ISO 3316.
Q5. What is the difference between 4139 and 4181?
A5. Both are 1/2″ drive 30-Teeth family items; 4181 is listed as quick-release reversible, while 4139 is listed as invertible.
Q6. Can this be used with impact tools?
A6. No—use as a hand ratchet only; avoid powered impact operation.
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