For sale are brand new plastic Timer Replacement Trippers for Intermatic clock timers (TN,TB,156PB10398A Series). Set of 4: two green trippers and two red trippers. (Green = ON Red = OFF). tags PB 800 PB 900 PB 1000 If you would like tracking assurance with your order which is never free for the seller it can be purchased for just .99 here https://www.ebay.com/itm/175583327910 . At checkout just note the order number(s) for me to combine :) USPS lost a lot of small items over the years which has taken its toll on my small business