Description
Product introduction:
Hollow metal pipe expansion screws (also known as hollow window geckos, hollow wall frame anchors), are super long type expansion screws for deep hole super thick anchoring, specially used for plastic steel doors and windows, aluminum alloy doors and windows, steel and wood structures, joists, architectural decoration ( GRC, such as Roman column, window cover), etc.; it is also the choice for fixing the floor joist keel, and it is also particularly suitable for fixing other ultra-deep and ultra-thick components.