Cov ntawv cog khoom yas scraper yog feem ntau yog nyob rau ntawm lub duab plaub lossis duab plaub, nrog qhov loj me ntawm 15.5120.5 cm. Qhov qauv qauv tsim no ua rau cov yas chaw nres tsheb cov paib hluav taws xob khov kho kom yooj yim thiab siv tau thaum siv.
Ib qho ntxiv, daim paib nres tsheb yas chaw nres tsheb, xws li siv rau cov dej khov nab kuab thiab daus los yog nruab nrog daim paib token nres tsheb. Cov qauv kev tsim no ua rau cov scraper yas ua kom haum rau cov kev xav tau ntawm cov dej khov, tab sis kuj tuaj yeem siv los ua chaw nres tsheb, nrog ntau yam kev siv.
