... metal base design,apperance is same as our A big model,but body length is a little shorter. hydraulic hingeB09. ... 65mmSealing end design.it is same design as A big model,but shorter length,so we also call it as ... middle/big model opening degree: 95degreeoptional installation of hinge cup distance:45. ... weight per carton is 14.6KGS Big buffering hinge (model B)