1) Ball nut: it can transfer the stress of surrounding rock to the pad.
2) Arch plate: can bear greater stress of surrounding rock.
3) Check plup plug: make the grouting maintain a certain pressure to fill the surrounding rock gap adequately.
4) Anchor bolt bar: the whole length of the intermational standard waveform connection thread, easy to install drill bit, coupling sleeve, fastening nut; and can be arbitrarily cut and connected to lengthen.
5) Bushing: so that the bolt can be lengthened to the design depth while drilling.
6) Broach: it has strong penetrating power, enabling the bolt to pass through all kinds of rocks.