Steel bollard base plate fixes permanently in place using four pre-drilled Ø23.5mm mounting holes (fixings not included). Base will fit various sizes of bollards (not supplied) - especially suited to Sealey Model No's. BOL600, BOL900, BOL1050 and BOL1200. Ø11mm Padlock hole will accommodate most robust padlock designs such as Sealey Model No. PL402L or PL302W.