Uhlaka oluyinhloko lwe-caster lwenziwe ngensimbi, kanti isondo lesondo lenziwe nge-polypropylene (PP) elinamandla okuthwala okuqinile.
I-TPR isetshenziswa njengento engaphezulu kwamasondo, enokumelana okuhle kakhulu kukawoyela, ukumelana namanzi, ukumelana nezidakamizwa nokumelana nesikhunta, futhi inokumuncwa okuhle kokushaqeka nokunciphisa umsindo.
Ingaphandle lesondo lenziwe ngezinto ze-ABS, ezimelene nokugqwala futhi ezingagugi.Inhlanganisela ye-universal rotating ball disc kanye namabhola anomthwalo omkhulu namandla okuthwala aqinile.