A double spin ticket was an uncommon reward from the Squeal of Fortune. When you got this ticket, you were able to spin the wheel twice more. Redeeming the ticket prompted the message, "Congratulations! You have earned 2 spins on the Squeal of Fortune!"
As of the update on 14 August 2012, double spin tickets were automatically claimed for spins if the player chose to keep them. Unlike most other prizes, they could not be converted to coins.
Some time prior to 1 November 2013, double spin tickets were seemingly removed from the Squeal of Fortune.
When the Squeal of Fortune was replaced with Treasure Hunter on 4 February 2014, double spin tickets were completely replaced with double keys tokens, however these were never made available.
Woohoo, extra spin for the win!
Voice played when using the ticket