1. Kuchena:99.95% W1
2. Density: 19.3g/cm3
3. Giredhi:W1,W2,WAL1,WAL2
4. Chimiro:sekudhirowa kwako.
5. Feature: Yakakwira kunyungudika, yakakwira tembiricha oxidation kuramba, hupenyu hurefu hwebasa, kuramba ngura.