407pc Professional O-ring Set Assortment 34 Sizes 407pc PROFESSIONAL O-RING SET ASSORTMENT 34 SIZES 34 Sae Sizes Range From 1/8 To 2 1/4" Buna-" n Material Is Oil Proof And Passes Astm Oil #1 And #3 Laboratory Tests For Use In Transmissions; Plumbing; Hydraulics; Air; And Gas Connections