Locks for Harlequin Oil Tanks / Double Locks Locks for Harlequin Oil Tanks Large Outer Locks Double Locks Single Locks Double Lock for Harlequin Oil Tank - Screw Top Lid with Nobbles (TA62) £70.00 Add To Cart Double Lock for Harlequin LP1200 Oil Tanks (TA72) £70.00 Add To Cart Double Lock for Harlequin Oil Tank with Screw Top Lid (TA37) £70.00 Add To Cart