4" Tri-Clamp Spools Select Length:18-inch It's important to note that

It's important to note that the Aeromixer is not included in the purchase of the Aerobewer

Ready to go out of the bag

the L-shaped design snugly fits the unit

pH Perfect® Technology locks pH levels into their sweet spot

4" Tri-Clamp Spools Select Length:18-inch It's important to note that4" Tri Clamp Tri Clover Spools Sizes Available: 4" x 2" Tri Clamp Spool 4" x 4" Tri Clamp Spool 4" x 8" Tri Clamp Spool 4" x 12" Tri Clamp Spool 4" x 18" Tri Clamp Spool 4" x 24" Tri Clamp Spool 4" x 36" Tri Clamp Spool 4" x 48" Tri Clamp Spool Specifications Tri Clamp Size 4" Material 304 Stainless Steel Standard 3A High Polish Spool OD 4" Spool ID 3. 834" Flange OD 4. 682" Bead Center 4. 344" OD = Outer Dimension ID = Inner DimensionDisclaimer to