NEW OLD STOCK.

EARLY 80'S SHIMANO AX AND EX AND OTHERS "ONE KEY RELEASE" CRANKSET BOLTS AND COVERS. IT'S BASICALLY A SELF EXTRACTING CRANK BOLTS.

STEEL BOLTS WITH ALLOY COVERS. FITS ANY 3 PIECE CRANKS WITH SQUARE TAPERED B.B. SPINDLE, EXCEPT FRENCH CRANKS.