Pec Fly / Rear Delt bụ igwe eji arụ ọrụ abụọ na-ekewapụ igbe ahụ nke ọma na ogwe aka na aka na-agbanwe agbanwe.
Site n'ịgbanwe ọnọdụ mmalite na chere ihu n'ime igwe, Watson Pec Fly / Rear Delt na-enyekwa ụzọ dị mma isi kewapụ isi azụ nke delts.
Ihe owuwu dị oke arọ na ngwugwu 100kg na-eme ka igwe a zuo oke ruo ọtụtụ afọ nke mmegbu na gyms hardcore.