This Dunnet Tools Magnetic Parts Dish Is Made From Heavy Duty Steel And Features A Polished Paint Coating On The Surface. This Prevents Corrosion And Makes It Easy To Spot Any Items That Are Stored In The Tray. When Working On A Project, This Magnetic Tray Is A Great Way To Ensure All Of Your Parts Stay In The Same Place You Put Them. Never Lose A Screw Or Bolt Again With This Ideal Solution. It Can Also Be Great Storage For Some Small Metal Garage Tools. The Bottom Of This Magnetic Tray Is Covered In A Texturized Rubber. This Will Provide Grip On A Non Magnetic Surface And Also Protect Any Surface The Tray Is Magnetised Towards. This Tray Is Useful For Both Professional And Diy-ers, However It Becomes Especially Useful For Mechanics Or Automotive Work As The Tray Can Be Attached To Magnetic Parts Of The Cars Body. Technical Specs: This Bowl Is Made From Stainless Steel With A Painted Blue Coating. It Measure Approximately 4"/100mm In Diameter. It Is Approximately 30mm Deep. Feature Texturized Rubber Bottom On Magnetic Part.