Bait bands can be attached directly to the hook, fished on a hair rig with a band stretched around a pellet or, alternatively, the band can be stretched and pulled inside a drilled pellet or boilie with a Drennan Band Puller.
Pre-cut ready to use and, by buying the appropriately sized bands, they should fit most sizes of pellet. These bands are also a good colour match to the low-oil content pellets in popular use.