Listing includes 1 or 2 ball bearings depending on model (check list below), used to replace the factory bearings or bushings found on these reels. Bearings are available in both ABEC-7 Stainless Steel, ABEC-7 Hybrid Ceramic, and ABEC-5 Full Ceramic . This bearing upgrade will really help the reel's drag system perform to its very best, especially if you are replacing the bushing(s) with actual ball bearings or upgrading the factory bearings to ceramic. This superior bearing drag system together with carbontex drag washers (offered for sale separately) will undoubtedly help you land more fish. One bearing (metal shields) Caldia 2500X, 3000X ( replaces a bushing ) Caldia 3500X, 4000X ( replaces a bushing ) 09 Caldia 1503, 2000, 2500, 3000 ( replaces a bushing ) Caldia Kix 1500, 2000, 2004, 2004W, 2500, 2506, 2506W, 3000 ( replaces a bushing ) Caldia Kix 2508 Custom, 2508W Custom Caldia Kix 3500PE Custom, 4000, 4000 Custom Caldia Kix 4000 ( replaces a bushing ) Two bearings (open) 14 Caldia 2004, 2004H, 2500, 2506, 2506H, 2508H, 3000, 3012H ( replaces a couple of bushings ) 21 Caldia FC LT 1000S, 2000S, 2000S-H, 2500S ( replaces a couple of bushings ) 18 Caldia LT 1000S-P, 2000S, 2000S-XH, 2500, 2500-XH, 2500S, 2500S-XH, 3000-CXH, 4000-CXH, 4000S-C, 5000D-CXH, 5000S-CXH ( replaces a couple of bushings ) Two bearings (metal shields) Caldia 2000A, 2500A, 2508A, 3000A ( replaces a couple of bushings ) Caldia 4000A ( replaces a couple of bushings ) Caldia 2000SHA, 2500SHA, 3000SHA Caldia 4000SHA 09 Caldia 2004, 2506, 2506W ( replaces a couple of bushings ) 11 Caldia 2000, 2500, 2506, 2506H, 2508, 2508R-SH, 3000 ( replaces a couple of bushings ) 11 Caldia 3520PE-SH, 4000 ( replaces a couple of bushings ) 14 Caldia 3520PE-H, 4000 ( replaces a couple of bushings )