Stainless steel expansion corrosion resistance, acid and alkali resistance (can be customized according to drawings, please contact customer service before placing an order)

タイトルまたは説明

Expansion screws are widely used in various decoration occasions because of the small drilling, high tension, exposed after use is flat, if not used, can be removed at will, to keep the wall surface flat advantages. Expansion screws are generally said to be metal expansion screws, expansion screws are fixed by the use of wedge-shaped slope to promote the expansion of friction grip force to achieve the fixed effect. One end of the screw is threaded, and one end has a taper.