A catalyst is a substance that speeds up a chemical reaction and is used in conjunction with polyester resins and gelcoats. In cooler temperatures or desire of faster dry times extra catalyst is needed.
Catalysts

Catalyst MEKP-925, clear
$3.00 - $20.00
$3.00 - $20.00

Catalyst MEKP-925, red
$8.50 - $12.00
$8.50 - $12.00