Snap On OEX Long Handle Series 7pc SAE Flank Drive. Snap On OEX Long Handle Series 7pc SAE Flank Drive Combination Wrench Set is in goof used condition. Includes: OEX10 – 5/16″, OEX12 – 3/8″, OEX16 – 1/2″, OEX18 – 9/16″, OEX20 – 5/8″, OEX22 – 11/16″, OEX24 – 3/4″, OEX26 – 13/16″, OEX28 – 7/8″, OEX32 – 1.0″.