Personalized Electrician Megahertz Round Youth Long Sleeve T-Shirt. Don't mess with an electrician, it megahertz text ringed with resistance is a humorous gift design for electricians and vocational technical students at back to school, birthdays, holidays and graduation. youth long sleeve t-shirt. Shoulder-to-shoulder taping. Youth: S(6/8), M(10/12), L(14/16), XL(18/20)