- Title: Pass in 10 Days! Class 4 Hazardous Materials Handler (Otoshu Dai 4 Rui Kikenbutsu Tor扱い者) - Author: Seijiro Motoyama - ISBN: 978-4-910351-08-7 - Price: 1600 yen I am selling this because I bought it but didn't use it. It's difficult to see in the image, but there is a crease on the spine. Please understand that this has been stored at home before purchasing. Hazardous Materials Handler #Pass in 10 Days! Class 4 Hazardous Materials Handler - Sweet Success #Pass in 10 Days! Class 4