Diabolo players world wide have ask for it, and now it has finally arrived. This kit allows you to convert your Mr. Babache Finesse Diabolo into a ball-bearing diabolo. This evolution is truly spectacular, and after the conversion, this is easily the best ball bearing diabolo ever made. Made by Spintastics, this kit uses the same bearing system as their Spinabolo, but with a few modified parts to allow it to be used in the Finesse. The result is a light, fast, smooth, and overall beautifully playing diabolo. Kit includes 1 long axle, 1 bearing, 4 washers, and 2 lock-nuts. Note: This is an aftermarket kit.