JOB LOT 20 TWENTY RYDE 507- 21 (24 X 1.75 – 2.125) ALLOY WHEEL RIMS. THEY ARE FOR TYRE SIZES (507) FROM 24 x 1.5, 24 x 1.75, 24 x 1.90. 507 ETRTO SIZE. YOU ARE BUYING A WHOLESALE JOB LOT OF TWENTY (20) (ENOUGH FOR 10 PAIRS) ALLOY 24” WHEEL RIMS.