Riser Block Aids Hardened double deadbolt design gives

Hardened double deadbolt design gives additional protection against twist and cut attacks

makes this one of the most comfortable strings on the market

Wilson has been the official game ball of the NFL since 1941

+ Superior combination of durability and playability in an 18-gauge string

distance and stability performance

Riser Block Aids Hardened double deadbolt design givesWide, stable platform to level the front of the bike when riding a trainer. For a stable, worry free ride with any rear wheel mounted trainer. Unique 3 level design lets you select the level of difficulty. Stack two blocks to simulate climbing workouts.