LTWFITTING 3/4 Inch FHT x 3/4 Inch MIP OR 1/2 Inch FIP Hose Adapter,Brass Garden Hose Fitting(Pack of 5)Type: Garden Hose adapter Size: 3 4 Inch FHT x 3 4 Inch MIP OR 1 2 Inch FIP Net Weight : 50 g pc Package include: 5 PCS (pieces) New Garden Hose Adapter Materies: BRASS

Net Weight: 128g/pc

Net Weight: 23

Thread:1/4 Inch NPT Female x 1/4 Inch NPT Female

Custom designed and manufactured for All Pond Solutions FW Range Nano Fish Tanks-FW-29 Foam Pack

Net Weight: 10

Net Weight: 13g/pc

Custom designed and manufactured for AquaManta EFX 200 filtration systems

Total length: 5-1/2 Inch

Tube Size:3/16 Inch OD Thread:1/8 Female NPT

Net Weight: 61g/PC

Hose ID 2 (Right): 5/8 Inch

They are just Activated Carbon impregnated foam