Waya wa Razor, womwe umadziwikanso kuti waya waminga, ndi mtundu watsopano wazinthu zodzitchinjiriza zomwe zidapangidwa m'zaka zaposachedwa zokhala ndi chitetezo champhamvu komanso kudzipatula.Minga yakuthwa yokhala ngati mpeni imamangidwa ndi mawaya awiri ndipo imapangidwa kukhala mawonekedwe a concertina, omwe ndi okongola komanso oziziritsa.Adasewera zabwino kwambiri zolepheretsa.
Waya wa lumo uli ndi mawonekedwe abwino kwambiri monga mawonekedwe okongola, okwera mtengo komanso othandiza, anti-blocking effect, komanso kumanga kosavuta.