3/8" Drive SAE #18, 9/16" Hex, Shallow Universal Spline Socket | FESU180B Multimeter Accessories • Patented tapered hex design

• Patented tapered hex design securely retains spark plug in socket without rubber insert or magnet

• 3/8" drive Extension Connector adds versatility to extensions

• Sealed head keeps lubricant in and contaminants out for longer life

• Use to store or inventory small tools and parts

inches : 1/8

3/8" Drive SAE #18, 9/16" Hex, Shallow Universal Spline Socket | FESU180B Multimeter Accessories • Patented tapered hex designSockets comply with AS954, military specification MS 33787 and MIL W 8982 Use on high tensile strength spline nuts and bolts widely used on both military and commercial aircraft Unique spline wrenching configuration also allows for use on ordinary 6 and 12 point fasteners with an advantage similar to the Snap on Flank Drive wrenching system Manufactured from special alloy steel and heat treated for optimum strength and durability Nickel chrome plating