Feature: 1. Two Colors: Red and black are included in total, the colors are clear, which helps to quickly distinguish the purpose of different connecting lines. 2. Nickel Plated: 4mm pitch U shaped connecting wire inserts, nickel plated copper, low loss, corrosion resistance, durable, can be used for a long time. 3. 4mm Jack: There is a 4mm jack at the end of the plug, which can be inserted into all 4mm sheathed plugs or non sheathed 4mm jacks. 4. Good Performance: Y type conversion plug, with high quality electrical performance, strong applicability, professional design, to ensure safe use. 5. Multi Purpose: These U shaped spade plugs have a wide range of use, suitable for testing and multimeters, electronic applications, etc, with stable connection. Specification: Item Type: Spade Plug Material: Copper, PA U Shaped Insert Opening Size: Approx. 4mm/0.15in Jack Diameter: Approx. Φ4mm/0.15in Color: Red, Black Uses: Suitable for Testing and Multimeters, Electronic Applications Rated Voltage, Current: 30Vac-60Vdc, Maximum 36A Connection Mode: Transfer. Package List: 5 x Red Spade Plug5 x Black Spade Plug Note: Manual measurement, please allow some errors.