This Benchmade 710 is one of the original knifes that introduced the AXIS lock. The first 200 or so knives were built and sold with aluminum handles. Ths is one of the second version which had scales (handles) made of G10. The 710 was the knife that introduced the AXIS lock. The AXIS lock is a very easy to use knife lock that can be operated with either hand. It’s strong and fast to open and close.