We have revised more thickness of pinch prong to 0.9 -1.0 mm. and to decreased the weigh of the metals. Then we have changed the 0.3 mm wire to 0.4 mm wire and gluing on knot in plain metals.
We have revised more thickness of pinch prong to 0.9 -1.0 mm. and to decreased the weigh of the metals.Then we have changed the 0.3 mm wire to 0.4 mm wire and gluing on knot in plain metals.