Groz-Beckert Long-arm needles are specifically made for multi-directional use, which is exactly what long-arm machines need. Multi-directional design means more accurate stitching while moving the machine in any direction. Extra strength allows maximum flexibility and bending. The deep scarf prevents skipped stitches, less puckering, and less thread breakage.
MR refers to Multi-directional
R point needles are considered "rounded sharps" and is also suitable for woven fabrics.
Needle size: #16=MR 3.5; #18=MR 4.0