This one is similar to most I've seen but then the weighted end is a little different. Instead of smooth and then pointed on the end like a bullet, it's different. The end has a narrow section and then flares out to the same diameter as it was before. Hard to describe but it looks a bit like you took one of the others and tied a string around the end and squeezed really hard. Sort of hourglass shaped and then round on the end instead of pointed.