Durable aluminum heads and steel cablesTransverse taper is versatile in flares, constrictions and parallel cracksRounded edges for easy cleaning (smaller sizes are straight for better surface contact)Durable aluminum heads and steel cablesTransverse taper is versatile in flares, constrictions and parallel cracksRounded edges for easy cleaning (smaller sizes are straight for better surface contact) | Black Diamond Equipment Stopper Set Classic #5-11