Dynamite Baits Betaine Green Pro Expander pellets bring the full attraction of SwimStim into an expander pellet format. These premium Swim Stim Pro-Expanders are designed to be either ‘pumped’ or left to soak in water, creating the perfect sinking soft hook or feed pellet. The unique Koi technology promotes an aggressive feed response, setting them apart from other pellets on the market. Their spongy, robust texture ensures they remain firm once soaked or pumped. - Supplied in 350g re-sealable bags