The 165 mm cylinder diameter threshold separates small-diameter machines (typically used for hosiery, socks, and tubular fine-gauge fabrics) from large-diameter machines (used for jersey and other broad circular-knit fabrics). The distinction affects the applicable tariff line, so the machine's cylinder specification should be confirmed before classification.

A Raschel machine is a warp-knitting machine and classifies under heading 8447 (subheading 844790), not under the weaving-machine heading. Warp knitting interlocks loops of yarn rather than interlacing warp and weft, so it is knitting machinery regardless of the fabric's appearance.