A clamp having a first leg and a second leg where the first and second legs have a first end and a second end. A biasing means is secured to the second ends of the first and second legs. The biasing means holds the first ends of the first and second legs in a spaced apart relationship. A locking means having a rotatable locking flange is positioned on the first end of the first leg. A projection is positioned on the first end of the second leg. The projection is disposed to be in alignment with the locking means when the first end of the second leg is advanced to a position adjacent the first end of the first leg. The rotatable locking flange is rotatable to engage the projection to secure the second leg in a position adjacent the first leg.