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);
the option “12mm bolt” means 12mm bolt with 1.75mm pitch (M12 x 1.75P);
and the option “16mm bolt” means 16mm bolt with 1.5mm pitch (M16 x 1.5P).

If it's B,

Measure the inner diameter of the handlebar, if it’s 13~21mm, you could use the expansion bolt.

If it's C,

You’ll have to customize it to A or B .