1-V (Solid Steel) 10SI,12SI,15SI,17SI,27SI/100,CS130,-144 - 10mm Belt; 64mm OD x 17mm Bore; without Hub; uses D1-0753 Spacer (7127, 7134, 7135, 7137, 7145, 7152, 7157, 7191, 7192, 7199, 7272, 7273, 7275, 7277, 7278, 7279, 7290, 7292, 7294, 7802, 7807, 7808, 7820, 7830, 7888, 7894, 7901, 7977, 8167, 8466, 12268, 14327, 14329, 14331, 14395, 14582, 14894, 14896, 14921, 14923, 14955, 14984, 20167, 20435, 20449, 20592, 20593, 20810, 20867, 22328, 22405, 22920)