Introduction to LED tungsten steel thimbles: The commonly used thimbles for ASM automatic die bonding machines come in two specifications: 10 degrees and 15 degrees. They have a diameter of 0.7mm and lengths of 15, 17, and 18mm. Currently, the equipment that can be used with these thimbles includes domestically produced die bonding equipment from companies such as Xinyichang, Jiasi Te, Daying CNC, Xinmeihua, Weikong Automation, Cuitao Automation, and Zongke.