Masamba omwe amagwiritsidwa ntchito kawirikawiri ndi makona atatu, quadrilateral, pentagon, makona atatu, bwalo ndi rhombus. Kuzungulira kwa mzere wolembedwa wa tsambalo ndiye gawo loyambira la tsambalo, ndipo kukula kwake (mm) mndandanda ndi 5.56, 6.35, 9.52, 12.70, 15.88, 19.05, 25.4…. Ena ali ndi mabowo pakati ndipo ena alibe; ena alibe ngodya kapena zosiyana zothandizira; zina zilibe zothyola tchipisi, ndipo zina zimakhala ndi chip breaker mbali imodzi kapena zonse.