Pin blade holds nut while loosening or tightening bolt with integrated T-handle. The latest version with reversible 5mm hex and T-30 Torx head. A great tool that firmly holds both the nut and bolt simultaneously, greatly simplifying this task! It's simply the best tool we have ever see for this job. If you haven't used this tool, you don't know what you are missing! Investment case body and hardened alloy tool steel wrench heads. Replaceable blade (PE-35202)