This Buffering icon is made in Material Design style developed by Google. This style is based on extremely simplified shapes, thin two-pixel lines, and is optimized for 24x24 px. Unlike other vector icon packs that have merely hundreds of icons, this icon pack contains 4,400 icons, all in the same style and quality.
This icon for "spinner frame 6" is a group of eight circles. These circles are arranged to form a single large circle. The eight smaller circles are different in shape, with the smallest one being on the left, and each circle getting progressively larger in a clockwise manner.