Wheel Data:  Diameter = 7.5mm, Width = 4.7mm Shore D hardness ≈80 ±3 (Durometer ISO 868) ABEC-7 rated and pre-lubricated single bearing wheels made in Germany. Bearing Dimensions: 1.5 x 4 x 2mm Also recommended for beginners and advanced fingerboarders. Rolls smooth and fast. Allows pinpoint fingerboarding with more sensitivity and coordination. Highly accurate and durable Fingerboard Wheels. Highest precision...