Post Stitch, 1-1/4 Cr, 25 in Throat, (.103X.020 Wire) 110VAC/60Hz - Arcuate Part Number: HF25P-AST-1-1/4CR-ARC
8MM Conversion kit for M55L - Serial # till 299 but not 205,206,215,216,230,231,250-253 Part Number: 9955468