Material: This car seat hook is made of firm ABS plastic and can hold up to 10kg for each bundle if the 2 layers are combined. If you split the double hooks, it can hold up to 6.6 lbs for each layer of hook. Enough for daily use. Unique Double Hook Design: You can combine the 2 layers of hooks for single use or heavier weight demand. You can also use the 2 layers separately to hang different items in 2 positions. Bonus details: 1. Non-slip EVA wedge around the pillow pillar if it is less than 0.48 to prevent scratching and swaying. 2. The lock cover on the top can make the hooks more stable and not fall off. 3. The phone holder is hidden at the bottom of the top hook. 4. The hooks can be rotated 360 to any position you need. Multi-function for space organization: these hooks are very useful for hanging your handbags, handbags, shopping bags, grocery bags, clothes, umbrellas, water bottle, etc., which will help give you a tidy car and improve stability and safety in sudden braking or bumpy road . It can hold items in the front and rear by rotation for your convenience. Universal Fit: The 2 hooks fit most cars and SUVs with a pillow pillar 0.8 to 1.6 cm in diameter. It can hold mobile phones under 3.54 in width Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.