USMC Spring Assisted Knife 3.75in 3CR13 Stainless Steel Drop Point Black Blade Aluminum Handle Black. The three point serrated or clip point blades are spring assisted requiring only a two finger pull to extend and close. The back spring also moves the detachable rust resistant nickel silver bolsters out of the handle with the handle to engage the blade or use the wave pattern flipper for opening. The all new M-A1059 Series of Spring Assisted Knives feature a slimmer liner silhouette slimmer handle line with a liner storage compartment under the blade and a pocket clip on the back. Specifications for USMC M-A1059 3.75in Spring Assisted Knife: Manufacturer: USMC Blade Length: 3.75 in Blade Material: 3Cr13 Serrated: Plain Overall Length: 8.75 in Handle Material: Aluminum Handle Length: 5 in Handle Color: Black Handle Finish: Anodized Blade Finish: Black Blade Shape: Drop Point Opening Method: Spring Assisted Additional Features: Clip Color: Black Package Contents: USMC M-A1059 3.75in Spring Assisted Knife USMC M-A1059BK: M-A1059BK Spring Assisted Knife 3.75in 3CR13 Stainless Steel Drop Point Black Blade Aluminum Handle Black