This polycarbonate keyring is extremely robust. It comes in large or small, with a black, blue or brown non removable rubber ring.
Personalisation is easy: simply slide an index card between the two plates at the top of the keyring. Then tighten the ring and rivet to keep the plates in place and the keyring cannot then be disassembled.
Small keyring: 78 x 43 x 6 mm - Weight 26 g
Large keyring: 100 x 55 x 8 mm - Weight 55 g