The Smith & Wesson First Responder Stainless Steel Magic Knife has a nylon fiber handle. It has a spring loaded glass breaker. The total weight is 4.9 ounces. It has a 3.4 inch blade and a 4.8 inch handle. It is made of 4034 stainless steel. 
 
Blade length: 3.75 in
Overall length: 8.50 in
Blade material: Stainless steel
Handle material: Nylon
Comes complete with pocket clip
Weight: 4.90 oz
Lock type: Plunge lock