Thumpers (previously called Tassel Tails) are some of the thuddiest floggers I make. All of the weight and momentum is contained at the ends and so the top gets more bang for their buck. These feel punch like in the way that they hit.
Don't be intimidated by the knots! The knots are very light compared to the leather in the tassel and rarely impact and even if done deliberately don't carry much impact.
This piece is made in black, silver, and white leather with black and white with black elkskin tassels. There are 8 tails and they are approx 20 inches long (entire tail, including the braided portion and tassel) and the handle is 8 inches long. The handle has a steel core and is balanced.
All of my bdsm toys are made by hand in my studio in Los Angeles.