12 PCS Spring Iron Test Tube Clamp Flask Experiment Testing Holder Scientific Metal

Description This item is a test tube clamp which is made of material durable in use. It can withstand high temperature and self-closing spring structure will not break test tube. It is a must have supply for lab school home and etc. Features - Color: Silver - Material: Iron - Size: 11.5x2.3x0.3cm - Made of material durable in use. - Can withstand high temperature very convenient. - Self-closing spring structure will not break test tube. - A must have supply for lab school home and etc.