Nrog rau txoj kab uas hla ntawm 42inches thiab ob sab qis (5/10 ntiv tes), kiv cua no tuaj yeem ntsia ncaj nraim los yog beveled kom haum koj cov kev xav tau. Cov khoom siv suav nrog, cov khoom siv sib npaug, thiab cov lus qhia meej ua rau kev teeb tsa yooj yim, ua kom muaj kev paub tsis muaj wobble.
Peb sawv tom qab peb cov khoom thiab tau cog lus los muab kev pabcuam zoo rau cov neeg siv khoom. Yog tias koj ntsib teeb meem thaum siv lossis txhim kho lub kiv cua, suav nrog kev tswj chaw taws teeb ploj lossis cov khoom siv puas, thov tsis txhob yig tiv tauj peb. Peb yuav ua haujlwm nrog koj los daws txhua yam teeb meem thiab ua kom koj txaus siab.