Overview Product Videos Product Description Elna hook drive gear | 403030 - 5/16" Elna Star sewing machines 11, 13, 21, 23, 31, 33, 41, 43, 62, 64, 72, 74 Product Videos Videos Hide Videos Show Videos Elna SP ST SU sewing machine repair tips Cleaning, repair and oiling of the needle alignment dial, hook... Elna SU and Special repair tips Elna SU and Special repair tips photos, these are not instruct... Custom Field Product Reviews