1. SECURE SECURITY: Our foldable tray set uses a strong magnet base that securely holds most metal surfaces while keeping metal parts and tools inside each small parts holder; the non-destructive magnetic screw tray set will not cause damage. 2. FLEXIBLE MAGNETIC TOOLS: These magnetic bowls are used to hold nuts and bolts, and can be folded and unfolded to increase the depth of the magnetic tray to accommodate more objects or store parts individually; it is an ideal magnetic tray set for mechanics, plumbers, carpenters, etc. 3. SILICONE TOOL TRAY SET: Our magnetic screw holder set uses a magnetic tool tray made of high-tensile silicone, ensuring that this small parts tray set can be used as needed; the magnetic bowl of each screw is resistant to most hazardous liquids. 4. EASY IDENTIFICATION: This magnetic parts tray set contains parts that can be easily color-coded and easily organized, helping to speed up projects; the tray set comes with foldable bowls in blue, orange, green and red. 5. Convenient Storage: Each nut and bolt tray has a compact shape, which can be easily and conveniently stored when the folding headset is not in use; each magnetic bolt tray can be quickly unfolded when needed and can hold up to 2 pounds (about 90.9 grams) of tools and parts.