Therefore, even if strong pressure is not applied to the impact type screw in the inserting direction, the drilling screw can be driven without idle, further, a tapping hole formed on {HEAD ~ the gypsum board} is prevented from damage so that {TAIL ~ the gypsum board} can be fixed to the thin steel plate efficiently 
Therefore , even if strong pressure is not applied to the impact type screw in the inserting direction , the drilling screw can be driven without idle , further , a tapping hole formed on { HEAD ~ the gypsum board } is prevented from damage so that { TAIL ~ the gypsum board } can be fixed to the thin steel plate efficiently
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH