① Find a flat and solid ground, then
drill a hole 12mm in diameter and 40mm in depth. ② Place the bolt completely in the hole. ③ Screw in the anchor screw with 8mm Hexagon
screwdriver. ④ To explode the anchor bolt completely.
⑤ Screw out the anchor screw.
⑥ Follow the above steps to finish other
three holes and explode other anchor blots. Then fix the shower with anchor screws.