The hardness of skateboard wheels is typically measured on the durometer scale, with the most common ratings being 99a, 100a, and 101a. The higher the number, the harder the wheels. 101a wheels are the hardest, providing less grip but more speed, while 99a wheels are softer and provide more grip but less speed. 100a wheels fall in between, offering a balance of grip and speed. The choice of hardness depends on the type of skating and personal preference. **

The durometer hardness of skateboard wheels is typically measured on the A scale. The most common durometer hardness for skateboard wheels is 99a, which provides a good balance of grip and slide. However, skateboard wheels are also available in 100a and 101a durometer hardness for different preferences in riding style and terrain. **

The difference in rolling between 100a and 101a in skateboards is generally considered to be significant. The "a" rating refers to the hardness of the skateboard wheels, with 100a being softer and 101a being harder. Harder wheels (101a) typically roll faster and have less grip, making them better for smooth surfaces and technical tricks. Softer wheels (100a) provide more grip and shock absorption, making them better for rough surfaces and cruising. Therefore, the difference in rolling between the two hardness levels can have a noticeable impact on the performance and feel of the skateboard. **

The wheels with 101a are harder than the ones with 99a. The durometer rating measures the hardness of the wheels, and a higher number indicates a harder wheel. Therefore, the wheels with a 101a durometer rating will be more suitable for smooth surfaces and provide faster speed, while the 99a wheels will offer more grip and control on rougher terrain. **

The hardness of Spitfire Formula 4 skateboard wheels is typically 99a. This hardness level provides a good balance between grip and slideability, making them versatile for various skateboarding styles and terrains. The 101a hardness is slightly harder and may be more suitable for smooth surfaces or advanced skaters looking for a faster ride with less grip. **

Yes, Swarovski is considered fashion jewelry. Swarovski is known for its high-quality crystal jewelry and accessories that are often used to add sparkle and elegance to fashion ensembles. The brand offers a wide range of jewelry pieces, including necklaces, earrings, bracelets, and rings, that are designed to complement various fashion styles and trends. Many people consider Swarovski jewelry to be a fashionable and stylish choice for accessorizing different outfits. **

Fashion jewelry can stain if it comes into contact with certain substances such as water, sweat, perfume, lotion, or other chemicals. The metal in fashion jewelry can react with these substances and cause discoloration or staining. To prevent staining, it's important to remove fashion jewelry before swimming, exercising, or applying lotions or perfumes. Additionally, storing fashion jewelry in a dry and clean environment can help prevent staining. **

To clean jewelry with gemstones, it is important to use a gentle cleaning solution and a soft brush. Avoid using harsh chemicals or abrasive materials that can damage the gemstones. You can soak the jewelry in a mixture of mild soap and warm water, then gently scrub with a soft brush to remove any dirt or grime. Rinse the jewelry thoroughly with clean water and pat dry with a soft cloth. It is also recommended to have your jewelry professionally cleaned and inspected by a jeweler regularly to maintain its beauty and integrity. **