Felting needles are barbed needles used to interlock wool fibers. As the felting needle is moved up and down, the barbs on the needles catch the scales of the wool and entangle them creating a material called felt. Great for most hand held felting tools (sold separately). This package contains four 3 inch long needles (size 36, 38 & 40 triangle, size 38 star). Made in USA.