This Bolt tightens the Clamp which goes over the Main Piston Cylinder. It is compatible with multiple Liquid Piston Filler Machines. 

Compatible with:

• E-FP-5000
• E-FP-1000-D
• E-FP-5000-D
• E-FP-1000-D2
• E-FP-1000-DHH

California Residents: read Proposition 65 warning.