Professional 1/2" drive hex socket bits with 100mm working length, designed for use with impact wrenches, ratchets, and power tools. Manufactured from high‑strength S2 alloy steel with precision machining, these bits provide excellent torque, wear resistance, and long service life. Ideal for automotive repair, machinery maintenance, construction, and industrial assembly tasks.

Key Features:
- S2 Alloy Steel: High hardness, impact resistant, durable for heavy‑duty use.
- 1/2" Square Drive: Standard compatible with 1/2" drive tools.
- Precision Hex Profile: Secure fit, reduces slippage and fastener damage.
- 100mm Extra Length: Ideal for deep and hard‑to‑reach applications.
- Black Oxide Finish: Corrosion‑resistant and non‑slip surface.
- Heat‑Treated: Stable performance under high torque.
- Wide Size Range: Complete hex sizes for versatile jobs.
Specification:
| Model |
Drive |
Hex Size |
Length |
Material |
| YT-04390 |
1/2" |
4 mm |
100 mm |
S2 Alloy Steel |
| YT-04391 |
1/2" |
5 mm |
100 mm |
S2 Alloy Steel |
| YT-04392 |
1/2" |
6 mm |
100 mm |
S2 Alloy Steel |
| YT-04393 |
1/2" |
7 mm |
100 mm |
S2 Alloy Steel |
| YT-04394 |
1/2" |
8 mm |
100 mm |
S2 Alloy Steel |
| YT-04395 |
1/2" |
10 mm |
100 mm |
S2 Alloy Steel |
| YT-04396 |
1/2" |
12 mm |
100 mm |
S2 Alloy Steel |
| YT-04397 |
1/2" |
14 mm |
100 mm |
S2 Alloy Steel |
| YT-04398 |
1/2" |
17 mm |
100 mm |
S2 Alloy Steel |