Ninja Key Chains - 12 pc Add kick to your ninja party favors with these handy key chains. They're also great classroom giveaways to students who are well-behaved warriors! These ninja key chains make great gag gifts for friends, or hand them out to your martial arts students after competitions as rewards for putting forth their best efforts. Made of Vinyl. Measures: 1 3/4 with 1" diam. metal ring. Pack of 12