자전거 체인 오일 건식 WD-40
<img src='https://ipx.image-gmkt.com/imageproxy/?src=http%3a%2f%2fgi.esmplus.com%2faftersr10%2fwd-40%2f201902071403380060425.jpg&scw=-1&remake=Y' onerror="this.src='http://gi.esmplus.com/aftersr10/wd-40/201902071403380060425.jpg'; $(this).attr('onerror','');" />