Needle for very fine micro-rooting. Made in Germany.
Made of German Steel - stronger for less breakage. Nearly invisible holes when rooting.
The needle size (40,42,43, 46 etc) refers to the thickness of the needle. The higher the number the finer the point of the needle.
The higher the gauge number, the smaller the needle.
The lowerthe gauge number, the larger and stronger the needle.
Also, the number of barbs on the side of the needle will effect structural strength (how easy they break). We stock several types of needles: Compact - has 9 barbs Notched - have 1 or 2 barbs per edge (3 or 6 barbs total), and they are at staggered. Crown - are triangular, and have three edges, and a single small barb per edge. (3 barbs) Forked - have a very tiny fork on the tip. Single Barb - needles root the finest and are for advanced rooters only.
For rooting into vinyl, a 38 gauge Crown needle roots about as finely as a 42 gauge Notched needle. This is because Crown needles pull fewer hairs per follicle, because they have fewer barbs on the needle. That is what they are designed to do.