Adhyu Tungsten steel milling cutter 1per2 /3/4mm Tebal 12mm dia t slot end mill bit IDAdhyu Tungsten steel milling cutter 1per2 /3/4mm Tebal 12mm dia t slot end mill bit IDAdhyu Tungsten steel milling cutter 1per2 /3/4mm Tebal 12mm dia t slot end mill bit IDAdhyu Tungsten steel milling cutter 1per2 /3/4mm Tebal 12mm dia t slot end mill bit IDAdhyu Tungsten steel milling cutter 1per2 /3/4mm Tebal 12mm dia t slot end mill bit IDAdhyu Tungsten steel milling cutter 1per2 /3/4mm Tebal 12mm dia t slot end mill bit IDAdhyu Tungsten steel milling cutter 1per2 /3/4mm Tebal 12mm dia t slot end mill bit ID