Jet - ブラックジャック 大型リブ付きバットプラグ 7インチ

The ribbed sections are honestly the best part, each ripple gives you a clear stopping point so you can take your time working up to the full 7 inches. Heavier than I expected too, which I actually like.

The tapered tip made getting started a lot less intimidating, and those two ripples really let me pause and adjust at my own pace. Exactly what I needed for working up to something bigger.