Smith and Wesson First Response knife, SW-911, knife features a 1/8" thick high-carbon stainless steel serrated blade with screwdriver tip, lightweight black Zytel sure-grip handle, solid tungsten carbide striker-punch (glass breaker) with spring loaded trigger for high impact penetration of the toughest window glass. Blade has screwdriver tip, and the scalloped serrations quickly cut through thick seat belts. Stainless steel liner lock mechanism for easy opening and secure lock out. Includes a ballistic nylon carrying case with belt loop and clip. Length: 8" open, 4.5" closed. Designed by Blackie Collins.