Tapered sockets are developed for swift assembly and disassembly of pulleys and other transmission gear with no the require for specific resources other than a hex important. Various machined holes ensure quick group, steering clear of costly manufacturing unit downtime. Bushings are keyways machined to British Regular Specs. This is in addition to the clamping screw, which is sufficient for the needed torque in many circumstances. Tightening with a tapered bushing eliminates any gap between the hub and the bore, which eradicates fretting corrosion.