Monster Jam Mini Blue Thunder 1:87 Custom Keychain Lanyard Blue On Blue Tires Pre-owned - Used. This item has been used but is in good condition and repurposed into a custom keychain--see pictures. Nice stocking stuffer, souvenir to wear to the Monster Truck Show or everyday carry along for normal play, fidget toy that is harder to "lose." The Monster Jam Mini Blue Thunder 1:87 Custom Keychain Lanyard with Blue On Blue Tires is a highly detailed and collectible toy vehicle featuring a Monster Truck design. Made of plastic and diecast materials, this special edition keychain lanyard is suitable for children aged 3 years and up, as well as older fans of Monster Jam. The multi-color design, scale of 1:87, and inclusion of the iconic Son-uva Digger model make it a desirable addition to any toy collection. This officially licensed product from Spin Master is sure to delight fans of the Monster Jam series.