Flare Nut Wrench Set Alloy Steel Chrome Range of Head Sizes 184 in to 7/8 in 9 mm to 21 mm Overall Length 4.13 mm 5 mm 5.25 mm 5.57 mm 6.18 mm 6.19 mm 6.81 mm 7.12 mm 7.13 mm 7.62 mm 7.63 mm 0 Degrees Head Thickness 6/25 in 29/100 in 21/50 in 11/25 in 9/20 in 11/20 in Insulated No SAE/Metric Double End 6-Point Flare Nut