The "Excellent 12 Bolt Expeller" is a heavy-duty bolt-type oil expeller with a 44"X7" chamber, rated at 250 kg/hour crushing capacity on 35 horse power at 26 RPM. It is also marked as an "Excellent 9 Bolt" machine of size 44"x7". It mainly presses mustard, flax, coconut, sesame, sunflower, peanut, canola, neem and camellia seeds, the screw squeezing oil from the seed inside the barred pressing chamber. The machine is painted dark blue, with a large flywheel pulley, a feed hopper on top, a bar-type pressing cage held between square end posts and tie rods, splayed stand legs and a frame lettered in Hindi. It comes from a maker producing oil expellers since 1985.