1.Matching round rod: yakanaka uye yakasimba
2.Handleless dhizaini: iri nyore uye yakanaka kutaridzika
3.Two-dimensional kugadzirisa: imwe-bhatani disassembly, kugadzirisa nyore
4.High-simba rinombundira naironi roller: dhirowa rinogona kuramba rakatsiga kunyangwe rakaremerwa