(4 Units for UnderCarriage) Adhesive Bumper Guard Protection for 6.5'' Rubber Bumper Strips Protect Balance Board, Smart Board, IO Hawk(with Application Instructions) Leaves No Glue Residue

These bumpers have poor adhesive. They don't stick to the hover board. The adhesive backing doesn't even stick to the bumper itself. When you peel off the paper backing, 1/2 the time, the adhesive comes off in your hand like a ball of boogers. Don't waster your time or $$ on this poor quality product.