The strobe leds generate a considerable amount of heat, and this has been allowed for in the standard board design.
However, if you intend to use the kit in WigWag mode for extended periods, this kit of 12x heatsinks will ensure the longevity of the strobe leds when the kit is used in high temperature environments.
Supplied with thermal adhesive in glue or 3M tape form, depending on stock at hand.
57 grams /2oz total weight.
For extra peace of mind!