Harley Handlebar Throttle and spark control spirals 1916-34

Harley Handlebar Throttle and spark control spirals 1916-34, Nickel plated, sold in pairs. Note!, both these spirals are right hand spirals that was originally used on both sides all models 1924-34. They are also usable for year 1916-23 but left hand spiral which controls the spark advance and valve relief will be opposite as originally indented. Location: SC3E