Pneumatic air cylinders 5/8" bore x 2" stroke (6 pcs) plus 1 extra - $50 (Walker)

What you see is what you get.
Cost is less than $10 each, plus 1 free tiny air cylinder.
6 Clippard minimatic precision stainless air cylinders with red hard rubber bumpers and brass 1/8" air line push lock fittings From the Clippard website: https://www.
clippard.
com/part/SDR-10-2 SDR-10-2 Stainless Double-Acting (D) Cylinder, 5/8" Bore, 2 Stroke, Front Stud (S) Mount, Standard (R) Rod Bore 5/8" Mount Front Stud (S) Cylinder Type Double-Acting (D) Rod Type Standard (R) Stroke 2" Extra Rod Extension None Cushion Type None Magnetic Piston No Rod Wipers No Seal Material Nitrile Spring No Spring Rod Thread 1 Dia.
#10-32 (standard) Rod Thread 2 Dia.
N/A (no second rod end) Rear Port Standard Rear Port Rotated Ports Standard Ports Cylinder Head Anodizing No Anodizing Lubrication Silicone-Based Lube