Trolley coin keychains Trolley coin key ring, a popular alternative to a coin has used in any returnable vending device or supermarket trolley. Trolley coin key rings are supplied with standard C-22 keychain. We also provide Variety of High quality coin key holders that can fit £1 and €1 size coin. Available in wishbone style, round or oval style. Coin sizes reference: Euro coin : 23.2 x 2.3mm, 25.75 x 2.2mm UK coin : 22.3 x 3.0mm, 23.5 x 22.7 x 2.8mm Sweden  : 20.5 x 2.9mm, 28.5 x 2.0mm Swiss : 27.2 x 2.0mm, 23.2 x 1.5mm Norway : 24.0 x 2.0mm Demark  : 23.3 x 2.3mm > Custom Keychain type:  Metal keychain,PVC keychain,Leather keychain,PVC 3D keychain,Metal 3D keychain,Spinning keychain,Enamel Keychain,Epoxy keychain,Coin keychain,Bottle opener keychain,Printing keychain,Floating keychain,Embroidery keychain,Wristband keychain,Carabiner keychain.