5M 16 Gigi BF Boss Timing Pulley Groove Lebar 10/15/20/26Mm Lubang Dalam 5/6/6.35/7/8/10/12/12.7/14Mm

5M 16 Gigi BF Boss Timing Pulley Groove Lebar 10/15/20/26Mm Lubang Dalam 5/6/6.35/7/8/10/12/12.7/14Mm