You'll see and feel the difference between Bison ZipCrank systems and other manufacturers' systems…Bison uses our experience as a manufacturer of competition grade equipment to offer TruGlass tempered glass backboards that give players a more realistic rebound • Every backboard has an aluminum frame just like those in the gym • The extra heavy poles and front crank style height adjustment are designed to change the height of the breakaway goal from 7-½' to 10' with the turn of the removable crank handle • As an added bonus, Bison ZipCrank systems can be mounted closer to fences, walls or other obstacles than rear height adjustment systems • Four Seasons includes a 5" pole with 60" glass backboard • All systems include free fitted pole padding • All systems include free fitted pole padding • Limited lifetime warranties on backboard and pole system (1-year on rim, crank, and padding).

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