Description: Made from high strength Titanium material, with low friction nylon retainer Non-contact, Removable Rubber Shield for easy cleaning and less friction High speed, Wear resistant, Durable, Easy Installation and Replacement Come complete with 8 professional-grade bearings, 4 skateboard spacers, and a iron storage box Compatible with all kinds of boards: Skateboard, Longboard, Cruisers, Inline Skates, Roller Skates, Kick Scooter etc. Specification: Material: Titanium Box Size: Approx. 11.5x8.5x2 cm/4.5x3.3x0.7inch Bearings Size: Approx. 2.2x0.7cm/0.86x0.28inch Spacers Size: Approx. 1x1cm/0.4x0.4inch Package Includes: 8 Pieces Bearings 4 Pieces Spaces 1 Piece Storage bag Note: Color maybe slightly different due to different monitor. The above size is measured by hand, please allow slightly difference. Thanks