Mirror finish?., resulting in clean cuts, less chance for chip re-welding, a superior surface finish and a longer tool life. The Spiral ?. Excellent for: ALPOLIC Copper Composite Material (CCM), Alucobond, Aluminum, Aluminum 6061, Aluminum Alloys (Al-Alloy), Aluminum Composite Materials (ACM), Aluminum Composite Panel (ACP), Alupanel, Brass, Copper, Dibond, Durabond, e-panel?.
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