ITEM NAME:Chemistry Lab Single Adjustment Three Prong Extension Flask Clip Clamp for~Stand Specifications: Material: Zinc alloy Full length: 19.5cm Rod diameter: 8mm Rod length: 12.5cm Features: Three-jaw design. Made of zinc alloy. Surface plating, Claw portion with non-slip sleeve. Suitable for holding small flask or a small cylindrical glass tube. Suitable for clamping diameter 0-30mm circular object. Package included:.1X Three Prong Extension Flask Clip Clamp. Suitable for holding small flask or a small cylindrical glass tube. Material: Zinc alloy. Rod length: 12.5cm. Surface plating, Claw portion with non-slip sleeve.