LTWFITTING 5/8 in. O.D. Comp x 3/4 in. FIP Brass Compression Adapter Fitting (5-Pack) HF66101205 - The Home Depot

Coupling - Natural Gas - Brass Fittings - Fittings - The Home Depot

LTWFITTING 5/8 in. O.D. Comp x 3/8 in. MIP Brass Compression Adapter Fitting (25-Pack) HF6810625 - The Home Depot

LTWFITTING 5/8 in. O.D. x 3/8 in. O.D. Brass Compression Reducing Coupling Fitting (5-Pack) HF62R10605 - The Home Depot

Compression - Brass Fittings - Fittings - The Home Depot

LTWFITTING 5/16 in. O.D. Comp x 1/8 in. MIP Brass Compression Adapter Fitting (25-Pack) HF685225 - The Home Depot

This LTWFITTING Compression Unions are made of brass for durable. Designed for use with aluminum, copper and plastic tubing. Not for use with steel

5/8 in. O.D. Brass Compression Coupling Fitting (5-Pack)

LTWFITTING 5/8 in. O.D. Comp x 3/8 in. MIP Brass Compression Adapter Fitting (25-Pack) HF6810625 - The Home Depot

Everbilt 5/8 in. Barb x 3/4 in. MHT Brass Adapter Fitting 800039 - The Home Depot

LTWFITTING Assortment Kit 1/4 3/8 1/2 5/8 in. OD Compression Inserts, Brass Compression Fittings(Pack of 200) HF63PT46810MIX50 - The Home Depot

LTWFITTING Assortment Kit 1/4 3/8 1/2 5/8 in. OD Compression Inserts, Brass Compression Fittings(Pack of 200) HF63PT46810MIX50 - The Home Depot

LTWFITTING 5/8 in. O.D. Comp x 1/2 in. MIP Brass Compression Adapter Fitting (25-Pack) HF6810825 - The Home Depot