Universal Exhaust Hose Connector — Dual-Diameter 5.1" / 5.9", Leak-Resistant ABS

One coupler, three connections. The stepped design measures 5.1" on the inner ring and 5.9" on the outer, so it joins two 5.1" hoses, two 5.9" hoses, or bridges a 5.1" to a 5.9" — the mismatch that usually means buying a whole new hose. Threads accept both clockwise and counter-clockwise hoses, and the ribbed collar grips tight enough to keep hot air from escaping at the joint. Molded ABS, screws on by hand, no tools.

Dual diameter: 5.1" inner / 5.9" outer in a single part
Three connection modes — 5.1"+5.1", 5.9"+5.9", or 5.1"+5.9"
Both thread directions — clockwise and counter-clockwise hoses
Snug ribbed collar minimizes hot air escaping at the joint
Molded ABS — hand-tighten, no tools or tape needed