1 The air we breath is a mixture of gasses: primarily nitrogen, oxygen, & carbon dioxide. 2  So, the air you blow into a balloon creates pressure that causes the balloon to expand (& this pressure is generated as all the molecules of nitrogen, oxygen, & carbon dioxide move about & collide with the walls of the balloon).
Bravo Sports Corp. in Santa Fe Springs bought Sector 9 in La Jolla on undisclosed terms. Bravo makes scooters, skateboards, helmets and other sporting goods under about 20 brands. Sector 9 makes skateboards, surfboards, snowboards, gear, and accessories under three brands, and had been owned by Billabong International.
The standard inline skates bearings have the designation 608. The 608 means that the bearings are from the 600 series, with a 8mm inner diameter (the width of the hole, i.e., internal bore). The 6 appears to be for the 6mm difference between the inner and outer radii (from the outside edge to the edge of the hole). 608 bearings are also the standard size for skateboard bearings. Quad skates use either type 608 (8mm internal bore) or type 627 (7mm internal bore).