LTWFITTING Value Pack 1/4-Inch OD Brass Compression Insert,Sleeve Ferrule,Nut (Pack of 125): Amazon.com: Industrial & Scientific
Proline Series 1/4-in x 1/4-in Compression Coupling Union Fitting in the Brass Fittings department at Lowes.com
1/2" BSP male x 10mm COMPRESSION FITTING COPPER BRASS PIPE TUBE ADAPTER REDUCER | eBay
1/4" M NPT striaght compression fitting for 1/4" O.D. tube - Kleinn Automotive Accessories
Amazon.com: Appli Parts Brass 1/4 inch Compression Fitting reduction coupling for in line water filter with Male 3/8 inch NPT connection for Copper or PVC tubing APWF-100BC
Amazon.com: Ice Maker Water Line Brass Compression Tube Fitting, 1/4” OD x 1 /4” OD (5) : Industrial & Scientific
Tube Fitting 1/4" NPT-M to 1/8" Compression, Brass - MHOxygen
Everbilt 1/4 in. x 1/4 in. Comp Brass Coupling 800799 - The Home Depot
Ice Maker Water Line Brass Compression Tube Fitting, 1/4” OD x 1/4” OD (2) - Walmart.com
LTWFITTING 1/4 in. O.D. Comp x 1/8 in. MIP Brass Compression Adapter Fitting (5-Pack) HF684205 - The Home Depot