Remove the original handlebar end weights from handlebar grips and see if your handlebar ends are as following:
If it's A,
Measure the removed handlebar end weight’s screw for its pitch and screw size.
When purchasing in our webstore,
the option “5mm bolt” means 5mm bolt with 0.8mm pitch (M5 x 0.8P);
the option “6mm bolt” means 6mm bolt with 1mm pitch (M6 x 1.0P);
the option “8mm bolt” means 8mm bolt with 1.25mm pitch (M8 x 1.25P);
and the option “12mm bolt” means 12mm bolt with 1.75mm pitch (M12 x 1.75P).
If it's B,
Measure the inner diameter of the handlebar, if it’s 13~21mm, you could use the expanding bolt.
If it's C,
You’ll have to customize it to A or B .