BYSUISAN Bearings Skateboard Rollerblades 8Mmx22Mmx7Mm Review

❤【Optimal Material Durable Unique Packaging】To ensure reliability andmech longer ages, bearings are made of High-Quality Supreme chrome steel AISI 52100 which is more durable and better than carbon steell, much durable not only strength but also with dual shields for optimum lubrication and reduction of contaminants. Bearings are stacked in specially rectangular transparent box, which are handy for storing and organizing and counting until you need them,take out bearings much easier. ❤【Pre-lubricated Neat and tidy】Lubricated with a few cosmoline and grease at manufacture to protect them during shipping, but they look clean. Wash them in the sink with dish soap water, when you still feel somewhat gummy or sticky. If necessary, clean and wipe off outside grease with paper towels and WD - 40 (degreaser or other cleaning agent solvent) to remove grease, make bearings spin more freely.For added safety, cleaning work must be done outside & well away from any ignition sources. ❤【Wide For Moderate Load Application】The dimensions suitable for use in such applications as skateboards, roller inline skates, roller blades, scooters, most kinds of ordinary industrial equipment, 3d printing fliament spool roller guides, fidget spinner fan motor small micro rotary motor, shopping cart wheel walker luggage wheel wheelchair office equipments ect. If you find these bearings can be used in other special areas,please feel free to share your interesting experiences with us. ❤【Advanced Techniques】100% - Dimensional tolerance inspection for optimum assembly. Bore Diameter: 8mm; Outside Diameter: 22mm; Width: 7mm. Exterior design: Double metal seals Precision grade: ABEC-3 P6,Lithium grease range: -30°C ~ +110°C. Vibration and noise Grade:Z1. Grease may make you think them would not spin fast with a touch stiff when holding in hands-but will free-up during prolonged actual use. Most bearings needed "break-in" to spin well. ❤【Quality & Service Guarntee】We aims to provide high-quality bearings and service to customers. If you receive broken & defective bearings or not fully satisfied for any reason, please contact us immediately by Amazon messaging, we will compensate you with 1 year warranty or a full refund within 30 days. Any further concerns about our products (how to remove the ouside grease or relubricate), please feel free to contact us. We will help solve your problem ASAP.