With a transverse taper that is particularly versatile in flares, constrictions and parallel cracks, the Black Diamond Stopper Set Pro #1-13 is an essential set for any trad rack.__ With colour coded andodisation to allow for quick identification, and their rounded edges make for quick, convenient removals. __ Each stopper is made with a durable aluminium head and a strong galvanised steel cable. _Transverse taper is versatile in flares, constrictions and parallel cracksRounded edges for easy cleaning (smaller sizes are straight for better surface contact)