I feel I have the most control over my slides with these wheels compared to any other brand wheels. Perfect for skateparks.

Partner loved it

The only wheels I ride.

I've been skating street (tech) for almost 20 years and this is by far the best wheel in the industry. There's a reason why Spitfire's sponsored riders produce full dedicated video parts for their superior products. Formula four is not a marketing gimmick. This specific urethane far supercedes any other competitor's products (especially Bones STF).Being a heavy footed rider I usually flat spot wheels within the second session by sliding most of my rotational flip tricks. As an experienced skateboarder, flat spotted wheels are super annoying to ride on and often provide an unstable feeling when going fast and popping before a trick. However, this is the only wheel which has proven to be resilient and long lasting for my skateboarding style.The Bones STF wheels come in a close second with flat spot resistance BUT do not feature longevity. After a month of riding the Bones product the wheel's bearing casing became dangerously loose and would create a weird tension when rolling. It was almost as if the wheel and bearing wouldn't spin together because there was so much slack/gap between the two. I have NEVER had this experience with the Spitfire formula four wheels. The only time you'll need to swap these out for a new set is when they are worn down to too small of a size. I've taken 52mm down to 46mm after 6 months of heavy use on unforgiving asphalt/concrete/terrain without any issues.Skateboards (and their components) take a lot of abuse, especially urethane wheels. They are the conduit between you and the ground so it is important to invest in a product that is dependable and durable.As far as durometer 99/101 and shape; it's personal preference. When I first used this product (ages ago) I purchased both durometers and several shapes before discovering which wheels suited my style of skating. My ledge board utilizes the 99 classic shape for ease of flip in/out slides and grinds while my flat ground flip board features 99 radial slim wheels for better stability when landing.Most of the time these products are being sold by actual skate shops that send the product to Amazon shipping facilities. So be sure to check the seller before purchasing because it helps to support skater owned businesses.FYI, durometers do vary from company to company. Spitfire's 99 are more compliant on rough terrain, 101 provide a firmer feeling and IMO are better for smooth skate park concrete. I observed 101 to grant a better 'bite' on super smooth surfaces. Granted, these durometers will accentuate grip dependant of the wheel's shape contact surface. Check out Spitfire's website they provide detailed information about the size, shape, and contact surface measurements.Happy skateboarding!

L' articolo e' esattamente come descritto ed e' arrivato nei tempi indicati.

ABER - die Anzeige der Kugellager in dieser Anzeige ist irreführend und suggeriert einen Kompaktkauf (Wheels & Kugellager zusammen). Böse betrachtet könnte man das als "Masche" bezeichnen...Nichts desto trotz sind sie Wheels sehr gute Qualität - wie man das von Spitfire F4s gewohnt ist. Preislich auch (in Deutschland) kaum zu schlagen.