United Cutlery 2759 United Black Ball Assist Pocket Knife, Spring Assisted. The Black Ball Assisted-Open knife from United opens with the speed of
high-end knives at a tenth of the price. The 3 1/4" black-coated
stainless steel blade is razor sharp and offers a thumb stud and
back-side spur for multiple opening options. A black-coated pocket clip
holds it tight in your pocket. 7 5/8” ov, 4 1/2" cl.