Special structural design id yosavuta kugwiritsa ntchito ngati sikophweka kupanga chitoliro chodulira pamwamba kukhala chosalala popanda kusiyana.Sichingagwiritsidwe ntchito kudula waya ndi chingwe.Kudula Kwakunja: 1/8″ ~ 3/4″ (13mm ~ 18 mm) O/D.Maonekedwe amagwirizana ndi ergonomics