61-62 Full Size P/Less Sedan: ROOF RAIL seals (pr) this is the pivoting roller

this is the pivoting roller as shown with the screw in shaft that screws onto the threaded roller

will  improve stopping / Gripping power over standard discs

if you have a really high set coil from something

Genuine GM 1995 Service Manual

64-73 Chevelle / Malibu

61-62 Full Size P/Less Sedan: ROOF RAIL seals (pr) this is the pivoting rollerPair of new 63 64 full size pillarless sedan Roof Rail Weatherseals. for the 4 door pillarless. USA made Steele Reprodution brand.. excellent product. Year Make Model Style 1961 Buick Invicta 4 door Hardtop 1961 Buick LeSabre 4 door Hardtop 1961 Chevrolet Bel Air 4 door Hardtop 1961 Chevrolet Impala 4 door Hardtop 1961 Oldsmobile Dynamic 88 4 door Hardtop 1961 Oldsmobile Super 88 4 door Hardtop 1961 Pontiac Bonneville 4 door Hardtop 1961 Pontiac