Bestech Knives Tonic Inset Ball Backlock BT 2.88 in Folding Knife. 16cm) closed. 2.88" (7.32cm) black stonewash finish Bohler M390 stainless blade. Marbled carbon fiber handle. Titanium bolster(s). Thumb stud. Pocket clip. Black nylon zippered storage case. Boxed. Specifications for Bestech Knives Tonic Inset Ball Backlock BTKT2204E 2.88 in Carbon Steel Folding Knife: Manufacturer: Bestech Knives Blade Length: 2.88 in Closed Length: 4 in Blade Material: Carbon Steel Knife Application: Folding Blade Additional Features: Pocket Clip. Weight: 0.52 lb Quantity: 1 Age Group: Adults Package Contents: Bestech Knives Tonic Inset Ball Backlock