DC Plug Adapter 8 Types (Female 5.5mm 2.1mm Jack) etc. Conversion Outer Diameter Inner Diameter Laptop PC Connection 8 Female Jack Adapter Connectors, Male Power Adapter, 2.1 6.3 6.0 5.5 4.8 4.0 3.5 2.5 2.1 1.7 1.35mm Specifications Set: 8 pieces Sizes: 3.5x1.35mm 4.0x1.7mm 4.8x1.7mm 5.5x1.7mm 5.5x2.1mm 5.0x2.5mm 6.0x3.0mm 6.3x4.0mm Type: adapter Application: For Notebook Color: Black Material: PVC Size: 12*5.5*2.1cm Package Includes: 8x adapter Other products are not included. Note: Due to the light and different displays, the color of the item in the picture may be slightly different from the real thing. The allowable measurement error is +/-1-3cm.