Postalloy 219HD 6.4mm Kits Uses: Knife Honing Size:1 9 16in Uses: Knife Honing Sound Pressure 83 dBA When protection with tungsten carbide is needed POSTALLOY 219HD is an ideal choice Weld deposits contain tungsten carbide in a chromium rich matrix for added wear and corrosion protectionOther features include Easy outofposition weldability with the 14 diameter Excellent AC or DC operation even on a buzz box Low amperage and high metal recovery no slag to chip High deposition rates up to 3 times faster than ordinary electrodes Moisture resistant coating even under severe weather or high humidityPOSTALLOY 219HD hardfacing is a unique concept in hard facing technology and is over 90 efficient Its tubular design offers very smooth operational characteristics and permits higher travel speeds and much higher percentages of carbide forming elements contained in the core as compared to ordinary fluxcoated electrodes