1、It can use on hollow brick,drywall,fiber cement board,wood board and so on.
2、It can use to fix light something,for example lamp,curtain rod,and so on.
3、Easy to use.close it then you can use it,you need not take down the screw.
4、It is suited to most wall with different thickness.
5、It can use common cross screwdriver fixing,quick and convenience.