Compression Fittings
Can apply a variety of compressive loads. Compression loading only.

Hooks
A popular method to grab tensile samples when loops, holes, folds or overlaps exist. Quick attachment to the sample. Tension only.

Vice Action Grips
Squeeze the specimen prior to the test. Jaw spacing remains fixed, regardless of the load applied. Good for materials that do not neck significantly under load.

Self Tightening Grips
Self-tightening grips increase clamping force on the specimen as it is loaded. Typically a wedge or eccentric roller design. Work in tension only.

Frictional Drum Grips
Reduce grip-induced stress on the sample. They distribute friction around a fixed drum, which results in a much smaller clamping force needed to hold the sample. Tension only.

Accessories
Extension rods increase length when needed. Quick coupler/adaptoers allow quick interchange of grips between the stand and guage. They can also be used to affordably adapt one thread size to another.