1.Complying with European Standard CE/EN1154,which required durability test up to 500,000 cycles

2.No excavation being required

3.Easy installation with simple steps on assembling.

4.Slim aluminum body with very stable perfomance.

5.Closing speed adjustment valve at the visible side of the body

6.Adjustable closing power EN size 2 to 4

7.Aesthetic round base with angle adjustable screws