BlackHawk Bunker Buster Linerlock Black. 7cm) closed. 4.25" (10.8cm) black finish partially serrated D2 tool steel blade. Black Zytel handle. Thumb stud. Extended tang. Lanyard hole. Pocket clip. Boxed. Specifications for BlackHawk Bunker Buster Linerlock Black BHBB411BK: Manufacturer: BlackHawk Blade Length: 4.25 in Closed Length: 5 in Blade Material: D2 Tool Steel Serrated: Partially Serrated Knife Application: Outdoor Tactical Everyday Carry Blade Shape: Drop Point Handle Material: Zytel Blade Finish: DLC Handle Color: Black Opening Method: Thumb Stud Flipper Package Type: Box Color: Black Package Contents: BlackHawk Bunker Buster Linerlock Black