This is a complete replacement journal roll take-up spool for the models listed below.   

Compatibility:

Casio SE-G1, Casio SE-S10, Casio SE-S100, Casio SE-S300, Casio SE-S400, Casio SE-S2000, Casio SE-S3000, Casio SE-C300, Casio SE-C450, Casio SE-C2000, Casio SE-C3500, Casio SR-S500, Casio SR-S4000, Casio SR-C550, Casio SR-C4500