From German - English Ding/FreeDict dictionary ver. 1.9-fd1: U-Spule /ˈuː ʃpˈuːlə/ <fem, n, sg> [techn.] hairpin coil <n> "U-Spulen" - hairpin coils
U-Spule /ˈuː ʃpˈuːlə/ <fem, n, sg> [techn.] hairpin coil <n> "U-Spulen" - hairpin coils