As long as IK/KH/Q/W/T16/20L (Original 1.1mm) once is gapped to 0.8mm => more power and performance can be expected (immediate effect after installed).
Measurement of plug gapping to 0.8mm will be shown to buyer during order collection.
finding tis small rim nut 12x1.5 is 7point
many shop is sold out because old model 2 years ago i lose tat nut lock
i need nut lock.i can buy full set again if get it...