Contact Coins: Portable edc pocket fidget toys, finger skill toys for contact-coin style coin manipulation and tricks, coins can be made to roll fluid between the fingers, or back and forth over the thumbs, stepped design provides better stability for flipping and floating coins. Parameter Information: Coins size 1.38 * 1.38 * 0.2In, weight 0.6Oz, metal solid double face concentric-circles patterns stepped coins, weight fits, the size fits, and it feels great in your hand! Material: Made of titanium alloy TC4, titanium has high strength, lightweight, good corrosion and heat resistance, and can maintain its stable performance in harsh environments for a long time, exquisitely crafted and compact in design, making it a perfect edc toys.