180 Degree Glass-to-Glass Square Hinge Features: Solid forged brass construction 90 degree in and 90 degree out Three dimensions 48*76mm,56*91mm and 58*101mm supplied All moving parts (pins and springs) in stainless steel Phillip head screw and Allen screw available Self-closing from 30 degrees of closed position Small hinge (48*76mm), two hinges will hold up to 80 lbs. (36 kgs) Standard two hinges will hold up to 100 lbs. (45 kgs) Two hinges (58*101mm) will hold up to 122 lbs. (55 kgs) A reversible pivot pin is supplied, one side of the pin is marked at 90 degree. the opposite side of the pin is marked 85 degree, the pin can be rotated to activate the other side, this makes the hinge meet the construction site better. Finishes: Polished Chrome Satin Chrome Pearl Chrome Polished Gold Brushed Gold Polished Rose Gold Brushed Rose Gold Gun Metal Grey Satin Nickel Matte Black White Custom finishes are available on request