Remove the original handlebar end weights from handlebar grips and see if your handlebar ends are as following:
If it's A,
Measure your removed handlebar end weight's bolt for the bolt's pitch and size. And choose the fitment according to it.
Here is a list of the products we carry:
"8mm bolt with 1.25mm pitch" on both side of bar end,
choose the options "8mm bolt-on";
"6mm bolt with 1mm pitch" on both side of bar end,
choose the options "6mm bolt bolt-on"
We also have fittings for specific model:
"Indian Scout bobber" with a stock OE handlebar,
choose the options "Indian Scout Bobber";
"Royal Enfield Interceptor 650" with a stock OE handlebar,
choose the options "Royal Enfield Interceptor 650";
"BMW" bikes with a M10 threaded stock OE handlebar,
choose the options "10mm bolt for some BMW models with OEM bar";
"BMW" bikes with a M12 threaded stock OE handlebar,
choose the options "12mm bolt for some BMW models with OEM bar";
"Yamaha" bikes with a M16 threaded stock OE handlebar,
choose the options "16mm bolt for some Yamaha";
"Triumph air-cooled model" with a M5/M6 threaded stock OE handlebar,
choose the options "5mm bolt (for Triumph air-cooled)";
"Triumph water-cooled model" with a M6 threaded stock OE handlebar,
choose the options "6mm bolt (for Triumph water-cooled)";
"Some Moto Guzzi & Aprilla" models with a M6 threaded stock OE handlebar (*original bar end nut needed),
choose the options "Some Moto Guzzi & Aprilia";
"Honda Mini bikes" models with a M6 threaded stock OE handlebar ,
choose the options "6mm bolt (for Honda mini bikes. Monkey, Cub)";
"Harley Davidson" bikes with a M8 threaded stock OE handlebar (*original bar end nut needed),
choose the options "Harley-Davidson '21 later Sportster S, Nightster";
If it's B,
Measure the inner diameter of the handlebar,
if it's "14.5~15.7mm" or "17.5~20.4mm",
choose the options "7/8" threadless hollow bar";
if it's "17.5~20.4mm" or "20.5~24.9mm",
choose the options "1" & 1-1/4" threadless hollow bar";
if it's "14.5~15.7mm" or "17.5~20.4mm" or "20.5~24.9mm",
choose the options "7/8"~1-1/4" threadless hollow bar".
We also have fittings for specific model:
"Harley Davidson" bikes with a hollow stock OE handlebar, ID "14~24mm",
choose the options "Harley Davidson (specific models)";
"Indian" bikes with a hollow stock OE handlebar, ID "14~24mm",
choose the options "Indian (specific models)";
If it's C,
You'll have to customize it to A or B .