Lee's Ultra Hose Clips 2 Pack Part# 11515
 
Easily Secures Gravel Vac hose to bucket and or aquarium
For aquarium hose sizes from 1/2" to 3/4" diameter
Fits Lee's Ultrimate Gravel Vac and all Ultra Gravel Vacs except the SlimJr #11516 & Stretch #11550