RYOBI introduces the Spring Assisted Folding Knife with a 3.25 in. Partially Serrated Blade. The spring assisted activation makes one handed opening a breeze, and our blade lock switch gives you peace of mind during any project. Backed by the RYOBI Limited Lifetime Warranty, the Spring Assisted Folding Knife includes a pocket clip and an operator's manual and is a must-have in any shop.