Fits these machines
621, 621B, 621E, 621F, 621R, 621S, 623B, 623E, 623F, 627B, 627E, 627F, 631D, 631E, 631G, 633D, 633E II, 637D, 637E, 637G, 639D
Compatibility has not been verified by Seller. Buyer is responsible for confirming fit.
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