[Product List]A set containing 80 Jack screws. The nuts on these screws are special expanded nuts that blow up when tightened, increasing the range of fixing. Perfect for use as fixing screws for thin plates. [Quality Material]These Jackscrews are made from high quality Galvanized steel. The is galvanised and is a very nice silver colour. The carbon steel material has great hardness and toughness, making it an excellent fixing material. [Easy to use]Just like using ordinary screws and nuts that, thread the screw into the part to be fixed, then install the nut and twist the nut inside the screw. As you rotate, the nut gradually open and increase the range of fixing. [Safe fixing tool]Using hand or pneumatic tools can be quickly fitted to items of these materials and they not twist or distort these timbers and thin iron sheets. [Wide range of applications]These expanding screw sets are Perfect for mounting thin items. Install items such as car signs, billboards, ceilings, tin and laminate.<br><br>Colour:silver Material:Galvanized steel Size: x 20mm<br><br>Package Contents: 80 x Steel Petal Nuts<br><br>Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.