The heat-treated cutting edges of the BoltMaster series are the finest available anywhere. Lightweight and durable, each tool s head features a tension adjustment that allows precision tuning for maximum cutting effectiveness. Electrically nonconductive fiberglass handle system is resistant to 100,000 volts AC Safety-guard handgrip reduces the possibility of operator s hands slipping onto working end of tool For use on security chains, chain link fences and non-case-hardened locks Jaw opening: 3/8 Length: 18 Weight: 5.15 lbs. About Blackhawk! Dynamic EntryBlackhawk Dynamic Entry tools are the leading choice for forced entry and tactical breaching equipment. Dynamic Entry tools are controlled items - restricted to Law Enforcement, Military, Public Safety, and First Responders only.