Yenday ali ndi zinthu zingapo, kuphatikizapo zida ndi zolimbitsa thupi, zopangidwa zambiri zoyera, zolimbitsa thupi, zopanga zigawenga, zigawo zisanachitike.
Chida cha Rocklok Welld Stritings Phiri chophimba cha WMC, WFC, WE, WME, Lut, WMU, PTW. Kukula kwa Fraclikal ndi kuchokera 1/8 mpaka 2 inchi. Kupanikizika kwa max kuli mpaka 10,000 psig (689bar).
