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Upper and Lower Feed Single Needle Lockstitch
特厚料步靴大梭平缝机

Features：
@ Upper-lower feed is employed in which the walking foot and presser foot alternate in synchronism with the feed dogs, providing positive feeding of material without puckering or slippage, and providing smooth sewing of even the heaviest and most bulky materials.
@ Stitch length can be adjusted up to a full 12.7mm. The use of a fully rotating extra- large hook (approx. 5 times larger than standard) allows the lower thread to be wound to 80% of the hook diameter

功能特点：
@ 可靠的上下送料装置, 极适合缝制厚物。
@ 针距可达12.7mm。
@ 全旋转大型旋梭, 即使粗线亦能卷上 (是标准缝纫机 的5倍)