http://www2.towerhobbies.com/cgi-bin...&I=LXD712&P=ML

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http://bennettbuilt.com/page9.htm
Hi Point balancer
$39.95

A new unique multi-use precision balancer. Featuring extreme accuracy with no need to level balancer. Quick mounting and dismounting of balance shaft. One balancing shaft required to fit hole diameters from 1/8" to 3/8". Unique design of centering cone, movable cone can be reversed to center thin objects such as spinner back plates. A proven balancing design.