Bokosi la RA lopanda madzi ndi mtundu wa zida zamagetsi zomangira zomwe zimagwiritsidwa ntchito kuteteza mawaya kumadzi akunja, chinyezi, ndi fumbi. Kukula kwake ndi 300x250x120mm, komwe kuli ndi zotsatirazi:
1. Kuchita bwino kosalowa madzi
2. Kudalirika kwakukulu
3. Njira yolumikizira yodalirika
4. Kuchita zambiri