FEATURES: Use to extend the reach of Swivel Contact Bolts, and other short contact bolts. Extensions can be stacked to increase length even further. Note: these extensions are not ground for height location.
SIZES: Available in the following thread sizes, each in a choice of three lengths — see Dimensions page for part numbers:
5/16"-18
1/2"-13
5/8"-11
MATERIAL: 12L14 or 1045 steel, black oxide finish.