This impressive Paua tool has a 6 inch stainless steel blade.  

Product features

• for additional leverage this Paua tool has a 200mm kick back blade 
• marine grade 420 stainless steel for the ultimate in strength.
• full rubber handle.
• conventional one handed operation toggle style sheath and rubber straps.
• Also has a serrated cutting edge.

Sheath and toggle also sold separately.

Note: 420 stainless steel will always hold an edge but can be susceptible to surface rusting if not cleaned correctly after diving.