Iron base, XRF set of 24 discs (7 mm), see BS-XCCV-7MM, BS-4340M-7MM, BS-XCCT-7MM, BS-3932-7MM, BS-1962-7MM, BS-42-7MM, BS-4330V-7MM, BS-60E-7MM, BS-51E-7MM, BS-4620-7MM, BS-4820-7MM, BS-43A-7MM, BS-1931-7MM, BS-67B-7MM, BS-8822-7MM, BS-58D-7MM, BS-9325-7MM, BS-4942-7MM, BS-A485-1-7MM, BS-69B-7MM, BS-53E-7MM, BS-LF-3-7MM, BS-68C-7MM, BS-55E-7MM