This training course is titled 'UNDERSTANDING WHEEL WEIGHT TYPES' and is video 301 in the Wheel Balance Training Series, brought to you by Perfect Equipment. This training course dives into the differences between knock-on and adhesive wheel weights. This course also discusses the inherent differences between today's non-lead wheel weight material types. Brought to you by Perfect Equipment. Learn more at www.perfectequipment.com Design, text & content copyright © 2012, Perfect Equipment, Inc. All rights reserved. Perfect Equipment is a brand of WEGMANN automotive.