Fits these machines
631C, 631D, 631E, 631G, 633C, 633D, 633E II, 637, 637D, 637E, 637G, 639D, 641B, 650B, 651B, 651E, 657B, 657E, 657G, 660B, 666B
Compatibility has not been verified by Seller. Buyer is responsible for confirming fit.
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