Bolt body: full-length international standard waveform connecting thread, easy to install drill bit, connecting sleeve, fastening nut; and can be arbitrarily cut and connected to lengthen.
coupling sleeve: make the anchor bolt extend to the depth of the design while drilling.
spherical nut: the stress concentration of surrounding rock can be transferred to the backing plate.
drill bit: it has strong penetrability, so that bolts can pass through all kinds of rocks.
