Description: 【Easy to Use】: To use this Expansion Plug, simply select the appropriate size (high precision product, must be the right size to use). 【 Material】: Marine Boat Plumbing drainage plug is made of rubber and stainless steel materials that ensure durability and longevity of use. 【Package Includes】: Each package comes with 1 adjustable drain plug. Size Chart: Style A: Applicable pipe diameter range 25-31mm//0.98inch-1.22inch, hole diameter must be greater than 25mm/0.98inch to be used Style B: Applicable pipe diameter range 32-37mm/1.26inch-1.46inch, hole diameter must be greater than 32mm/1.26inch to be used Style C: Applicable pipe diameter range 38-44mm/1.50inch-1.73inch, hole diameter must be greater than 38mm/1.50inch to be used Style D: Applicable pipe diameter range 45-51mm/1.77inch-2.01inch, hole diameter must be greater than 45mm/1.77inch to be used Style E: Applicable pipe diameter range 52-64mm/2.05inch-2.52inch, hole diameter must be greater than 52mm/2.05inch to be used Style F: Applicable pipe diameter range 65-85mm/2.56inch-3.35inch, hole diameter must be greater than 65mm/2.56inch to be used Style G: Applicable pipe diameter range 85-100mm/3.35inch-3.94inch, hole diameter must be greater than 85mm/3.35inch to be used Style H: Applicable pipe diameter range 90-110mm/3.54inch-4.33inch, hole diameter must be greater than 90mm/3.54inch to be used Package Includes: 1 Rubber Expansion Plug Note: Please allow slightly errors 1-2cm differences due to manual measurement.