Blackjack - A Winner Spintech's Blackjack rubber combines breakthrough small cell sponge manufacturing with the proven performance of Spintech top sheets to provide the most dynamic "air sponge" product on the market. Blackjack delivers the ultimate in precise ball control and deceptive spin potential for today's modern ball defense players. You no longer have to gamble on the landing shots you need to win points with the 40 mm ball.
