bar end weights

Hey there, Apologies for another bar ends thread but I can't seem to find the info I'm looking for. I'm looking to throw some of 7/8" Handle Bar End Mirrors For Yamaha XJR1300 / XJ6 / V-max / MT-01/ FZ1 / FZ6 on my handlebars as I slowly prepare for my full conversion. I'd love to throw these...