Rau ratchet khi down pluaj , txhua leej txhua tus muaj kev txhawj xeeb tshwj xeeb txog nws, thiab qhov peb ua yog ua kom cov khoom xav tau ntawm txhua tus neeg siv khoom, yog li qhov zoo ntawm peb ratchet khi down pluaj tau txais zoo los ntawm ntau cov neeg siv khoom thiab nyiam lub koob npe nrov hauv ntau lub teb chaws. Lishenflex ratchet khi down pluaj muaj cov yam ntxwv tsim & kev ua tau zoo & tus nqi sib tw, yog xav paub ntxiv ntawm ratchet khi down pluaj , thov koj xav tiv tauj peb.