acrylic clapboard 9.6x11.7" /25x30cm dry erase director film movie clapper board slate - black coolbuy112 specifications: <br> material: magnetic strip + acrylic <br> writing way: use the high-quality felt pen or marker pen, and erase it after use (pen not included) <br> used for: film, tv plays, studio live, advertisement, video, etc. clapboard size: approx. 25 * 30cm / 9.6 * 11.7in <br> clapboard weight: 360g / 12.7oz <br> <br> note: <br> don't use the greasy pen, otherwise it can't be erased. <br> <br> package list: <br> 1 * clapboard