Measuring 4.5 overall, this spring assisted open folding knife from MTech Xtreme offers easy one handed deployment. Once open, the blade locks securely into place with the use of its liner lock. This knife features a 3.5 , 3mm thick, half serrated stainless steel blade with a stonewashed finish and thumb stud. The black G10 handle offers a superior grip in even the wettest of conditions and also has a seat belt cutter and glass breaker. This Tactical rescue knife comes complete with a pocket clip for easy and safe carry.