1, Turning, CNC Machining 2, Precision +/-0.002mm 3, Brass, Bronze, Copper, Steel, AL... 4, Pin, shaft, ring, complex figure For many years, Sandum ... , etc.Our manufacturing Capability:Turning Drilling Milling Knurling Threading Tapping slotting .... OD Φ0.5~Φ25mm, length 2mm~70mm, precision +/-0.002mm tol ...