Specifications: It can be used with 30W-50W pyrography machine. High impedance Tips is made of high resistance and high temperature resistant alloy. At high temperature, it can not bend, oxidize and has less carbon etc. 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. 23pcs different tips used for different functions,such as for large-scale rendering,delicate rendering and depict the uniform line Note: please allow 1-2cm error due to manual measurement. Specifications: Diameter: 1mm Length: 27-32mm Width: 9-10mm Power: 30-50W Temperature: 0-1000 (for general use) Service voltage: 3-5V Material: chrome-nickel alloy (Cr: 23~26, Ni:15~18) Suitable for: LH30, LH40, LH50, LH60, LH70, LH80, LH90, LH100 Note: Please allow minor errors due to manual measurement. Item color displayed in photos may be showing slightly different since monitors are not calibrated same. Package Contents: 23pcs of Chromium Nickel Alloy Pyrography Machine Wire High Impedance Nib Tips