- 2 x 0.75mm Slot TEM Support GridsSlot grids are suitable for specimen support when viewing entire large cells for serial sections where grid bars may interfere with sequential information. Slot size 2 x 0.75mm. Copper, Cu/Pd, Nickel & Gold. Special prices valid while stocks last.Average lead time: 1 to 12 daysFrom £17.68Average lead time: 1 to 12 days