Needle Clamp 556199 Fits Singerr Serger Models 14CG744, 14CG754, 14HD854, 14SH644, 14SH654, 14SH744, 14SH754, 14SH764, CG754,Also Fits: Viking Serger Huskylock S15, Pfafff Serger Hobbylock 2.0.