This utility blade knife has many added contours to provide improved grip and greater pulling power. Works especially well with hook blades on tough vinyl. The wide contoured midsection transitions to a narrow rear hook in proportion to the palm and fingers. The rear hook gives the little finger improved advantage for greater pulling power. The body pivots open by loosening the folding thumbscrew for fast access to replacement blades. The precision blade holder holds the blade tightly even at extended length.