Thank you for viewing. This is a skill test preparation set for electricians. The equipment is compatible with both Class 1 and Class 2, and I believe there are no shortages. There are many cable scraps. There is enough for repeated practice, but if you want to practice with the actual length, please purchase additional cables. *Please judge the type of cable from the photos. In addition, I am including a bonus of a passing clip, reference books, and DVDs. Thank you for your consideration.