* Made of high quality Chrome Vanadium Molybdenum Alloy Steel hardened with high technology for hardness at HRC 56-61
* Ball head can be tilted up to 25 degrees and is resistant to high temperature of up to 400 degrees Celcius
* High precision hex key with the deviation of just 0.02 mm.
* Reduce scratches on nut and hex keys
* Special long arm hex key
* Contains : 9 pcs. / set