Thank you for viewing! This is a course for passing the Class 4 Hazardous Materials Handling License on YouTube. Thank you for over 10,000 subscribers! I have created a collection of practice questions to help you prepare for the exam. There are a total of 350 questions. (ver. 1) Answers and explanations are included. It will be sent in print format (black and white printing) in a clear file. Please use it if you want to pass quickly. Please note that this does not guarantee a 100% pass rate. #HazardousMaterials #HazardousMaterialsHandler #Class4 #Class4HazardousMaterials #Class4HazardousMaterialsHandler #ReferenceBook #Class4