Professional 1/2" drive hex socket bits with 55mm working length, engineered for automotive repair, machinery maintenance, industrial assembly and daily fastening tasks. Made of high-strength S2 alloy steel with precision machining, these bits deliver strong torque, stable fit and long service life. The anti-corrosive surface ensures reliable performance in various working environments, fully compatible with 1/2" drive ratchets, torque wrenches and extension bars.

Key Features:
- Premium S2 Alloy Steel: High hardness, wear-resistant and torsion-resistant for heavy-duty use.
- 1/2" Square Drive: Universal fit for standard 1/2" drive hand tools and accessories.
- Precision Hex Profile: Tight non-slip fit, reduces fastener damage and cam-out.
- 55mm Standard Length: Suitable for general and semi-deep fastening applications.
- Anti-Corrosive Surface Finish: Rust-resistant, easy to clean and durable.
- Complete Metric Sizes: Covers 5mm–17mm common hex sizes for versatile use.
Specification:
| Model |
Drive |
Hex Size |
Length |
Material |
Surface Finish |
| YT-04381 |
1/2" |
5 mm |
55 mm |
S2 Alloy Steel |
Anti-corrosive Finish |
| YT-04382 |
1/2" |
6 mm |
55 mm |
S2 Alloy Steel |
Anti-corrosive Finish |
| YT-04383 |
1/2" |
7 mm |
55 mm |
S2 Alloy Steel |
Anti-corrosive Finish |
| YT-04384 |
1/2" |
8 mm |
55 mm |
S2 Alloy Steel |
Anti-corrosive Finish |
| YT-04385 |
1/2" |
10 mm |
55 mm |
S2 Alloy Steel |
Anti-corrosive Finish |
| YT-04386 |
1/2" |
12 mm |
55 mm |
S2 Alloy Steel |
Anti-corrosive Finish |
| YT-04387 |
1/2" |
14 mm |
55 mm |
S2 Alloy Steel |
Anti-corrosive Finish |
| YT-04388 |
1/2" |
17 mm |
55 mm |
S2 Alloy Steel |
Anti-corrosive Finish |