Extra long life-made of finest materials. Special sealed bearing-made for precision balancing. Super strong magnets to hold blade.
Just slip the blade (with any size hole up to 1-1/2") onto the cone. The magnetic holding collar holds blade perfectly on center. The ball-bearing spindle is then free to rotate and show the slightest out-of-balance conditions of the blade. With but a twist of the wrist the blade is off to be reworked when necessary. The TRACKING ARM can be extended for all size blades.