Check the listing for details. Mail Alert - Mail Flag - Mailbox Alert - FOR STEP2 STYLE MAILBOXES AS SHOWN- NEW. Color: Black, Condition: New. Listed at 14.95 USD. (MAILBOX NOT INCLUDED) for STEP2 STYLE mailboxes as shown - New and Improved with a 3D Printed UV resistant ball! Mailbox Maide is a mechanical indicator that attaches to the outside of your STEP2 STYLE mailbox that visually alerts you when you have received mail. No batteries or electronics needed. This unit is made in Troy, Ohio USA. It will fit other plastic mail boxes as shown if it has that approx. 1" thick area at the top, when your mailbox door is opened, it pushes the ball and spring out of its latch and sticks up higher than the box. To reset, place the spring back in the latch with the ball touching the door. The bright orange ball can easily be seen at distances greater than 150 ft. It is attached to your mail box using the provided self tapping screws. Included is the Mailbox Maide, instructions, and 2 attachment screwsNOTE: THIS IS ONLY DESIGNED FOR THE STEP2 STYLE BOXES SHOWNMAILBOX IS NOT INCLUDEDSearch Mail Alert 2 for Spring/Ball replacementFREE SHIPPING TO THE LOWER 48 STATES ONLY