Hollow drill also known as core drill, hole opener, center drill, steel plate drill, magnetic drill, rail drill and so on.
Bit classification: HSS bit, carbide bit, tungsten steel bit.
Cutting depth: 25mm, 35mm, 50mm, 75mm, 100mm.
Suitable for drilling RIGS: Germany overtone and other imported magnetic drilling and domestic hollow drilling.
Specification: 12MM to 100MM.