1、DURABLE STAINLESS STEEL: Made of excellent stainless steel material, more durable, you can rest assured to use 2、MULTI FUNCTION: Come with four wrench function, diameter is 4 5.5 7 8mm, suitable for a variety of sizes 3、EASY TO CARRY: There is a keyhole that can be attached to the key chain with a chain, small and very portable 4、STRONG AND CORROSION RESISTANT: Corrosion resistant, heat resistant, high temperature resistant, ultra low temperature resistant, good mechanical properties, high strength 5、WIDELY APPLICABLE: Can be used for RC remote control car, boat maintenance, very practical and convenient Item Type: Cross Electric Control Cabinet Key Material: Stainless steel Wrench Diameter: Approx. 4mm / 0.16in, 5.5mm / 0.22in, 7mm / 0.28in, 8mm / 0.31in Application: RC remote control vehicle, boat maintenance 1 x Cross Electric Control Cabinet Key