Comparison : Item # 9562B-2, 1/8" O.D. Tube Poly-Hold Compression Fitting-Captive Brass Sleeve Fitting - Straight Union
Item # 9562B-4, 1/4" O.D. Tube Poly-Hold Compression Fitting-Captive Brass Sleeve Fitting - Straight Union
Item # 9562B-5, 5/16" O.D. Tube Poly-Hold Compression Fitting-Captive Brass Sleeve Fitting - Straight Union
Item # 9562B-6, 3/8" O.D. Tube Poly-Hold Compression Fitting-Captive Brass Sleeve Fitting - Straight Union
Item # 9562B-8, 1/2" O.D. Tube Poly-Hold Compression Fitting-Captive Brass Sleeve Fitting - Straight Union