IN THE R/C BUSINESS SINCE 1992 !
Our own cupping tool . Set of 6 different size balls on an aluminum plate . Put in the vise or set it on the work bench . Select the ball size for your prop . Thread it into the pedistal . Position prop over the ball and lightly tap the cup that you want into the props edge .
Allow approximately 1 week for shipping . This product is made per order .