Its a rubber tube that is 8" long with a swivel on both ends.It acts like a shock absorber if a big fish like a steelhead hits it.You attach snubber to back of dipsey then leader on the snubber swivel.The spoon and leader have so little resistance that the dipsey can spin when letting line out.We used to have that problem till I put snubbers on my dipsey.The snubber has enough weight to pull that dipsey back and to keep from spinning.But keep that clicker on when letting out line anyway.