SBOS Spring Assisted Black Blade Folding Pocket Knife [8" OVERALL, 3.25" BLADE] Stainless steel, Black brushed, Pocket Clip YC-447 Spring assist folding knife offers rapid one-handed deployment, locks securely into place with liner lock. Durable black composite handles. Black aluminum with inserts handle. Black straight edge stainless steel blade. 4 5/8" closed length, 3 1/4 inch blade length with 3mm thickness.