Heli-Max Helicopter Blade Balancer FEATURES: Can balance virtually any blade with a drag bolt diameter of 2.5mm, 3mm, 4mm, or 5mm. Durable composite construction INCLUDES: One Heli-Max Blade Balancer th 10-25-05 ir/jxs NOTES: If replacement bearings are needed, use DTXC1569 upGX7/11/12 INCLUDES: One Heli-Max Blade Balancer th 10-25-05 ir/jxs NOTES: If replacement bearings are needed, use DTXC1569 upGX7/11/12