The ZCAT2436-1330A-BK from TDK Corporation is a hinged snap-on free-hanging ferrite core with 80 Ω impedance at 100 to 500 MHz, 0.512" (13.00 mm) inner diameter, 0.866" x 0.925" (22.00 mm x 23.50 mm) outer dimensions and 1.417" (36.00 mm) length.
The ZCAT2436-1330A-M from TDK Corporation is a hinged snap-on free-hanging ferrite core rated 80 Ω at 100 MHz to 500 MHz, with a 13.00 mm (0.512") inner diameter, 22.00 mm (0.866") outer diameter and 36.00 mm (1.417") length.