LTWFITTING 1/2 in. O.D. Comp x 1/2 in. MIP Brass Compression Adapter Fitting (20-Pack) HF688820 - The Home Depot

LTWFITTING 1/2 in. x 2-1/2 in. MIP Brass Nipple Fitting (20-Pack) HF10684020 - The Home Depot

Everbilt 1/2 in. OD Compression x 1/2 in. MIP Brass Adapter Fitting 800819 - The Home Depot

LTWFITTING 1/4 in. O.D. Comp x 1/8 in. MIP Brass Compression Adapter Fitting (25-Pack) HF684225 - The Home Depot

LTWFITTING 1/4 in. O.D. Comp x 3/8 in. MIP Brass Compression Adapter Fitting (30-Pack) HF684630 - The Home Depot

LTWFITTING 1/2 in. O.D. Comp x 1/2 in. MIP Brass Compression

LTWFITTING 1/2 in. x 2-1/2 in. MIP Brass Nipple Fitting (20-Pack) HF10684020 - The Home Depot

LTWFITTING 1/2 in. O.D. Comp x 1/4 in. MIP Brass Compression Adapter Fitting (5-Pack) HF688405 - The Home Depot

LTWFITTING 1/4 in. O.D. Comp x 3/8 in. MIP Brass Compression Adapter Fitting (30-Pack) HF684630 - The Home Depot

Lincoln 126864 3/8 Comp x 1/2 MIP Brass Adapter Fitting