The product consists of a clamping rod, a V-shaped clamp, a clamping head, and a clamping ring. Its function is similar to that of a diagonal clamp, but the locking needle angle is different and the clamping range is wider; Carving V-shaped grooves in three directions of the clamping head is beneficial for guiding the clamping of injection needles or electrodes; Clamping range: 0.4mm-4.0mm.