Very used for beaconing workings on sea, harbor entrances, channels.
Made of P.V.C. resin with security valve.
It has a central hole for passing ropes, poles etc. Perfect for signpost.
Available in red and yellow colors

SIZES
BB30 - 240 mm diam. / 320 mm hgt. / 8 Kg buoy.
BB40 - 320 mm diam. / 400 mm hgt. / 18 Kg buoy.
BB50 - 405 mm diam. / 510 mm hgt. / 36 Kg buoy.

Central hole of 50mm.