Split-shot specialists Dinsmores sell egg-shaped shot and even hand-held Auto-Shot machines that cut a slot in a legal No8, No10 or No11 lead shot. These locate the line in the slot and then squeeze the tiny weight in place.
Whereas split-shot are generally round or egg-shaped, the styl is long and thin like a rod with a central split so they can be squeezed on to the line in the same way as a split-shot. Some match anglers argue that styls allow a bait to fall slower through the water. Styl weights differ in weight from UK split-shot sizes.