Build-in-resin Prestressed Self Drilling Hollow Bar

Build-in-resin prestressed self drilling hollow bolt is ONTON’s new developed and patented product at the end of 2023, which is the improvement on the basis of traditional self drilling anchor bar. It consists of more than 10 devices, in addition to the traditional self drilling anchor bar, nut and plate, but also added resin capsule, stop plug, washer and so on. It can achieve two steps installation with much shorter time than that of traditional self drilling anchor bar.