Shaving Sword introduced the 'bonded blade' razor, which consisted of a single blade housed in a plastic cartridge. Gillette followed in 1971 with its Trac II cartridge razor that utilised two blades. Gillette built on this twin blade design for a time, introducing new razors with added features such as a pivoting head, lubricating strip, and spring-mounted blades until their 1998 launch of the triple-bladed Mach3 razor. Schick launched a four-blade Quattro razor later the same year, and in 2006 Gillette launched the five-blade Fusion. Since then, razors with six and seven blades have been introduced. Wholly disposable razors gained popularity
Kawasaki triple motorcycle collectors was nostalgic for H1 Mach IIIs along with other bikes of the era, Honda CBs and CLs, Yamaha RD350s and Suzuki Hustlers. In 1971, the S2 350 was introduced, and in 1972 its smaller brother, the S1 250 became available. The H2 750 was introduced in 1972, the culmination of Kawasaki's two-stroke project. Kawasaki said of the bike, "It's so quick it demands the razor-sharp reactions of an experienced rider." Its engine displacement of produced at 6,800 rpm. The engine was entirely new and not a bored-out 500. With larger displacement as well as less aggressive porting and