Item Name: Lifting Expansion Bolt M8x80mm
Material: 304 stainless steel
Size: Thread diameter:8mm,length excluding ring:80mm
Package Weight: 320g
Operating principle: Put the expansion screw into the ground or the hole on the wall and then tighten the nuts of the expansion bolt with wrench. The bolt goes outside while the metal sheath does not move. Thus the bigger head of the bolt will expand the metal sheath, making it fill the whole hole. Now, the expansion screw can not be pulled out.
Widely used in fence,burglarproof doors and window,canopy,air conditioning fixation,home decoration,engineering,etc.
Notice: If load has big shock,it will may occur loose,so dont recommend to be used to install ceiling fan etc.