Generally, taper lock pulley is used for achieving pulley coupling with great ease. It offers maximum grip and can be fitted with less effort, thus ensuring smooth functionality. It is used in multiple transmission components while being termed to be a vital one without which functionality is likely to be affected significantly. https://bmgworld.net/bmg/en/ZAR/All-Categories/Power-Transmission/Shaft-Fixings/Taper-Locks/1210X24MM/p/1210X24MM