Sealey extension cables 230v 2x usb sockets 3m sealey el34usbw a 3m extension cable from sealey suitable for garage workshop and office applications features 2x 5v 1a usb sockets and 230v sockets plus an onoff rocker switch fitted with bs approved 3 pin 13a extra heavy duty plug sealey el34usbw extension cable 3m 4x 230v 2x usb sockets white