The Tama HT830B Drum stool has a comfortable round seat in size XL. This is a great design that uses two-piece hinge collar closure system for superior connection and oversized wing nut for easy and secure tightening. TAMA removed the word "wobble" with this stool. The Glide-Tite-Grip gives this crutch a more secure attachment with the help of a metal-to-metal contact point. The crank is also no problem for the heaviest hitters.