1) FGV/slide on hinge,one way or two way 2) 48mm,52mm hole distance 3) ... FGV type/slide on type,one way or two way 2) Iron material with nickel plated3) Specification,Cup dia,35mm, ... hole distance ,48mm, Opening angle ,110 degree4) Two ... angle,165 degrees~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~FH49-0602 with plastic base