C-clip

A C-clip, comprising:

• a C-shaped clip body able to be opened and closed elastically and having two ends, the two ends of the clip body being defined as a front side of the C-clip;
• two peripherally open holes provided at an inner periphery of the clip body and located on two lateral sides of the clip body respectively, wherein the two peripherally open holes are adjacent to or located at the two ends of the clip body respectively, and the clip body has an outer diameter changeable by applying forces to the clip body via the two peripherally open holes respectively;
• wherein each said peripherally open hole has a communication opening and a closed end, each said communication opening communicates with the inner periphery of the clip body, each said closed end has an inner wall and an outer wall, both connected to a corresponding said communication opening, and the outer wall of each said closed end forms a stop edge;
• and
• a center of the communication opening of each said peripherally open hole is closer to the front side of the C-clip than is the closed end of the each said peripherally open hole.