For single needle post bed machine, Lockstitch m/c for sewing medium heavy materials, single/double needles post bed. For size 14#~20#, suitable for various kinds of shoes, such as sports, working shoes, leisure shoes, sponge(foam rubber sole pads) , baby shoes , senior leather shoes; size 20# to 24#, suitable for suitcase, leatherwear, garments, shoes, hats, pads, and body protection items; size 16#~21#, suitable for sports shoes, riding boots, bun shoes, lady shoes, handbags, hats and bags. Equivalent systems : 135X5;135X7;135X25;797;134(R); 135X7ELSE; SY1901.