Performance ball raced hinges are made to the highest specification from solid drawn brass and brass pins to guarantee no rust and a long lasting finish. They are ideal for heavy high quality doors in domestic applications. Featuring 4 ball bearing raced knuckles to prevent knuckle wear and provide a lifetime of silent, smooth door operation. Fixings included. Size L x W mm: 102 x 76 Knuckle Dia. mm: 12.8 Hole Dia. mm: 5.5 Thickness mm: 3.00 Knuckle Type: Ball Bearing Corner Type : N/A Material: Solid Brass Finish: Satin ChromeSize 102 x 76 - 2 Pieces Timco Performance Ball Race Hinges - Solid Brass - Satin Chrome in Silver