Our take: These caps are for the newly designed Version 2 Sound Flash Thunder B shells. The caps screw onto the threads at the top and bottom of the Version 2 Thunder B shells, providing you with greater reliability and sound performance. This pack of replacement Timer Delay Caps comes with 1 set of two (top and bottom) Timer Delay Caps.
Cap Construction: Nylon Polymer
Package Includes: 1 Set of 2 Gray Timer Delay Caps
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