ITEM NAME:23x 1mm Pyrography Wire Tips Nibs fit for 30-50W Adjustable Wood Burning Machine 23Pcs 1mm Pyrography Wire Tips Nibs Set For Adjustable Woodburning Machine SPECIFICATIONS.(Compatible with: Fit for Pyrography Machine LH30, LH40, LH50, LH60, LH70, LH80, LH90, LH100. 2) It can be used with 30W-50W pyrography machine. 4) The strength within 600 degrees is not bent without heating and the bending resistance of the writing head made by electric heating wire is much better than 800 degrees.