Size is 1/2 Inch Overlay: The hinges are for flush mount doors. And, your cabinet overlay size must be 1/2 inch. Vallecould product video showed how to measure cabinet overlay size.
Self Closing Cabinet Hinges: These self closing hinges could automatically close your door under 30 degree. But, they are NOT soft close hinges (NOT quiet).
Screws included: Each hinge come with 5 screws (3 flat head screws, 2 oval head screws). Please drive 3 flat head screws into door panel, Please drive 2 oval head screws into cabinet face. Color of screws is same to hinges.
Included 2 pair (4 pack) hinges: Usually one cabinet door need 1 pair (2 pack) hinges.
Hinges were made of very good steel: So, these heavy duty hinges are sturdy, and last a long time.