Features:- Made of carbon fiber、 attached with aluminum alloy case、 durable and lightweight- With a stainless steel clip、 can be clipped on your pocket or belt、 not easy to lose your keys- Fits about 5 keys or less ( not included )、 convenient and practical--Package weight: 0.062 kg --Product Size(L x W x H): 7.40 x 3.00 x 1.40 cm / 2.91 x 1.18 x 0.55 inches --Package Size(L x W x H): 8.00 x 4.00 x 2.00 cm / 3.15 x 1.57 x 0.79 inches--Package Contents: 1 x Carbon Fiber Key Clamp、 1 x Aluminum Alloy Fittings Kit