Bones STF Retros V4

A 99A durometer is considered a hard wheel, which is the industry standard for street skating. It provides a balance of grip and slide, allowing you to lock into grinds and slide on ledges without being too slippery or too sticky on rough concrete.

The V4 Wide shape offers a larger contact patch with the ground, which increases stability and provides a more solid platform for landing tricks. It is particularly useful if you prefer a locked-in feel when performing technical maneuvers or grinds.

Yes, the Street Tech Formula (STF) is specifically engineered to be highly resistant to flat-spotting. While no urethane wheel is completely immune to damage from extreme power slides, these are significantly more durable than standard formulas when subjected to heavy street abuse.

These wheels are optimized for street skating. Their 99A hardness and wide profile are designed to handle the varied, often rough surfaces of street spots, though they will perform perfectly fine in a smooth concrete skatepark as well.

A 52mm diameter is a versatile, mid-sized wheel that offers a quick acceleration and a lower center of gravity. It is an ideal size for technical street skating where you need responsiveness and agility over top-end speed.