Ayp / Craftsman / Sears Revolution Cap No. 586638501. This is a quick release blade cap that fits the craftsman revolution mowers only. Please make sure your part number matches.
AYP / Craftsman / Sears Lawn Mower Torsion Spring No. 532123713. This is an original equipment spring. Replaces part numbers 123713, 123713X and 532123713X