http://www.amazon.com/uni-ball-Retractable-Translucent-12-Pack-33950/dp/B000FDR47E?tag=555444-20&ascsubtag=dcb9949622b111e6b64f7e76b7f113070INT&ie=UTF8&psc=1&redirect=true&ref_=ox_sc_act_title_1&smid=ATVPDKIKX0DER