The Tecomec is the "standard in the industry" blade balancer. It has been trusted for over 40 years to provide the least cost/highest accuracy balance reading. An extra long life Magnetic Blade Balancer made of finest precision steel. The special sealed bearing enables precision balancing. Super strong magnets hold the blade in place. Simply slip the blade (with any size hole up to 1 and 1/2") onto the cone. The magnetic holding collar holds the blade perfectly on centre. The ball-bearing spindle is then free to rotate and show the slightest out-of-balance conditions of the blade. With a twist of the wrist, the blade is off to be reworked when necessary. The tracking arm can be extended for all size blades.