Needles > Brand > Signature Needle Arts Signature Needles are 100% American Made. They are precision milled from one solid piece of aluminum making them warm to the touch, impossible to warp, and all but noiseless. The stitches slip easily along the anodized aluminum and the needles have the sharpest point you can get in a knitting needle! Signature Needles are convertible but not interchangeable - meaning you can mix and match tips and cords within one size. They are so precision milled that you cannot tell where the needles attach. And the cord spins independently from the needle so the cord does not kink and it is highly unlikely that the needle unscrews. They are designed for knitters by a knitter!