b'Double Eye Marker BuoysStandard colours:ROPE HOLDS = BlackBUOY = Red(Heavy duty) Optional colours: BUOY = WhiteItem no. B41 B51 B61Diam.(mm) 320 405 480Length(mm) 550 700 755Buoyancy(kg) 23,0 46,0 72,0Eye Diam.(mm) 18* / 28 28* / 28 28* / 28Circumf.(mm) 10115 1270 1525*) Top Eye diameter22'