Product Advantages: 1.Every product has a unique Manufacturing Part Number label on the inner package that proves it has been qualified,which include Part Number,Model Number and inspection date information 2.If you have any questions about the item,please provide us the Manufacturing Part Number for checking,your profits will be guaranteed.3.Replacement for Riccar sewing machine. It is an ideal replacement for your old or broken one.4.Suitable Models: Replacement for Riccar 990, R750, R650, R551, 414, 500, 525, 555F, 572, 606, 666FA, 805, 806, 807, 808E, 888, 900, 30, 30, 30, 30 3500, 3600, 4001, 4003, 8400, 8500, 9150, 9160, 9600, 9700, 9800, 9900, RE571, RE581, RE591, RM570, 53741.5.Replacement for Tacony FA762. Specifications:Material: Metal & PlasticColor: White & GreySize: 2.3x2.6cm/0.91x1.02inch(LxW)Aperture: 8mm/0.31inchWeight: 37g Package include:1 x Hook Drive Gear2 x Screws About Shipping: All items will be shipped within 3 business days after the payment is received. Most times you will receive them within 8-12 days then. The specific delivery time is depend on circumstances.Any questions, please feel free to contact us During the shopping process, if you have any questions, please feel free to consult us, we will reply you within 24 hours, wish you a happy shopping Thanks for your cooperation and we'll make you feel satisfied.