Is anyone familiar with this serger model? Singer Ultralock Model

Singer Ultralock Instructional Video (1987) Sewing Machine

Singer Serger Threading - Model Ultralock 14u234 Overlocker

Singer Ultralock Instructional Video (1987) Sewing Machine

Singer Serger Threading - Model Ultralock 14u234 Overlocker

Cleaning and adjusting a serger, Singer Ultralock 14U64A needs some cleaning and adjusting

Can you help me decide on a machine? : r/sewing

Special Serger Features: Video Part 3

White Speedylock Serger Model # SL34D

Singer 14SH644 serger test and review - EMBROIDERY-PRO