Wide range of applications: DC power connector adapter; 5.5mm x 2.5mm male connector to 5.5mm x 2.1mm female jack connector suitable for various small products and electronic devices that use 5.5mm DC cylinder jack as power cables. Easy to use: Just connect the male and female ends in pairs to convert 5.5x2.5mm interface power to 5.5x2.1mm charging interface. Adopts ABS shell, non-toxic and odorless, corrosion resistant of inorganic acids, alkali and salt, and long service life. Right Angle: The right angle adapter makes it easy to pass the cable into the corner of the wall and protects the cable from bending Compact: Male plug outer diameter: 5.5mm, inner diameter: 2.5mm; Female jack hole diameter: 5.5mm, pin diameter: 2.1mm