The Zero Tolerance 0550 knife is a Rick Hinderer design that is similar to the much anticipated 0551 that was announced at the 2010 Blade Show. The 0550 features a CPM-S35VN stainless steel blade, a third generation powdered steel that is extremely hard and wear/corrosion resistant. The 6AL4V titanium frame-lock handle has a G-10 front handle scale. 2nd Gen with 4-way reversible deep carry pocket clip.