The 19221-0452 from Molex / Waldom is non-insulated lug terminal for 4 AWG wires and crimp termination. This heavy duty lug terminal has 10 stud size, 0.080" (2.03mm) thickness, 0.531" (13.49mm) outer edges and 1.500" (38.10mm) overall length. The 19221-0452 is made of copper and has tin finish.