12 x http://openbuildspartstore.com/delrin-mini-v-wheel-kit/ 6 x 6mm http://openbuildspartstore.com/aluminum-spacers/ 6 x 6mm for Mini Sized Wheels http://openbuildspartstore.com/eccentric-spacer/ 12 x M5 - 25mm http://openbuildspartstore.com/low-profile-screws-m5/ 12 x 5mm heat set inserts http://www.mcmaster.com/#94180a331/=119tt3c (pack of 100)