They're a bit flash and super-fast/tough--they're the closest things to lightning! The choice of material and attention to manufacturing detail gives an amazingly smooth and fast roll. If you want a skateboard bearing that will be all sorts of flashy, these guys won't disappoint. Features include: • Full CERAMIC balls, which are harder than steel, allowing them to last longer and perform under harsher weather and surface conditions. ABEC 9 • Balls smooth the race surfaces, helping them to self- heal and ware well. • High end, the precision shaping of the races and balls, creates less friction for an even, less vibrating performance, you can trust. • Coated stainless steel making them extremely resistant to corrosion and pitting. • Super tolerant to running dirty and dry Packaging is made from recycled / biodegradable material.