Generally known as a Thru bolt. Drill diametre is the same as the fixing bolt.

Use in concrete only M10 x 95mm , M12 x 100mm, M16 x140mm
M20 x 125mm, M20 x 160

Generally Known as a Rawlbolt. Drill size is 20mm for this M12 bolt. User has to mark out, drill 20mm dia hole, insert sleeve, postion item to be fixxed and then insert bolt. Ideal for
concrete or brickwork. Pre manufactured stud, nut and washer.
Use with RM50 resin system.

M12 x 160mm, M16 x 190mm, M20 x 260mm
Drill size is 2mm larger than the stud diametre being used. Drill hole, discharge resin into hole and insert stud, twisting as you insert. Allow to set, following recommended curing times.