Priya Industries offers Conical Hub. Priya Industries offers bicycle parts and handtools for both professional as well as amateur users. This Conical Hub offers a 3/8 inches x 5-1/2 inches front, 3/8 inches x 7-1/2 inches rear, 1.370 inches x 24 TPI BSCY thread and 16/ 20/ 28/ 36 hole.