Detailed Product Description pe wall plugThe material is PE or NYLONSize M6X30 M8X40 Colour :white, grey, black,red, green,and so onIt's ideal to be used for building materials.It endure the temperature(-40--+80),rust,corrosion,aging,ans chemical affect .Meanwhile good at electric insulation, tensibility, and high pressure.The structure designed with gear can prevent itself sliding in the hole.