This hand punch has a length of 6 inch, plus it weighs 0.2 pounds and is not insulated. It meets the standards for ASTM A342, DOE, Federal, FM, GSA, Military, MSHA, NFPA, OSHA. In addition, it is made of aluminum bronze, has a metric/SAE measurement type, is corrosion-resistant, plus it is non-sparking, is non-magnetic, and is not tether ready with a plain grip.