Weights are exactly as advertised.
Ordering from Mack is kind of an old school experience - it reminds me of mail order catalog shopping back in the day. Place the order, get a confirmation from Paypal and then nothing. Several emails asking for a status update went unanswered. A few weeks later the doorbell rings and the mail carrier is asking for a signature. A hand lettered envelope from Tyczyn, Poland is presented with stamps featuring a Polish soccer star and I'm like, "Oh... Hubs! Cool!!!"
Now I'm sure Light Bicycle in China would ship my rims slower if they could.
-Tim-