These are new, not new old stock.  here we have a set of replacement wheels for your 60's Schwinn Sting Ray, they feature rear schwinn slik 20x2.125 and front tire with superior tread(same as used on 125th anniversary) the wheel set consist of a rear coaster brake with 3/8 axle and front with 5/16 axle, so these can be used on most 60's sting rays.