Multi-purpose eccentric drill

Abstract

1. The name of the design product: eccentric multi-purpose drill (four blades). 2. The use of the design product: used for cutting and drilling tools. 3. The design points of the design product: the combination of shape and pattern. 4. The picture or photo that best indicates the design points: front view. 5. Other changes in the state of the situation that need to be explained: the highlighted design part is in the drill part, a is the eccentric top blade, b is the upper side blade of the four side blades of the drill part, the top inclined blade in the middle is slightly convex arc, and c is the lower side blade. The eccentric top blade at the top is a flat blade, and the b arc blade is higher than the other three blades when in use.

Images