Many knitters who suffer from repetitive strain injuries find square needles helpful to reduce shoulder, hand, wrist, and finger pain. ChiaoGoo QUADS Tips are made with the same hypoallergenic stainless steel and point design as the beloved TWIST tips, but with flat sides and rounded corners. They have the same weight and yarn glide as the round TWIST tips and are purposefully calibrated to keep the same gauge as when knitting with the same size round tips.