Features Made of high quality material, sturdy and durable in use This is a laboratory metal grip,an usual clamp accessory in the lab. For fixing the condensing pipe clamps, flask clamp and etc. The clamp is made of Stainless steel,and it is 90 degree with screws,it is secure and easy to control it. Convenient to replace the broken one Specification: Material: Stainless steel Color: Silver Size:11*3.5*3.5cm/4.3*1.4*1.4in Weight: Approx.102g/3.6oz   Notes: 1, When the metal frame fixed instrument platform, generally from the bottom up in the order. To use rail clamp clamping tube. Should be clamped on the pipe mouth. When fixed flasks should be caught in the burning neck, elastic fit. 2, iron clamps, hoop holdings should be kept consistent with the iron stand base to increase stability. 3, avoid contact with acids, alkalis. If accidentally, timely cleaning wipe. Spiral should always have a small amount of grease lubrication. Be sure to keep the rotation, and easy to use. Package List