high precision Boring and facing head 1.high precision, lots of types 2.the boring head with shank 3.have the stardard. Universal broing and facing head with following features and detailes1.high precision, lots of types2.the boring head with shank3.have the stardard.4. it is constructed with precision parts, freedom of seection feeding quantity , auto feed and stop. processing range from 5mm- ...