[1-5 & 8 (Fit: 1-5 & 8 to 1-3 & 4 )]
[2-1 & 4 (Fit: 2-1 & 4 to 2-3 & 8 )]
[1-3 & 4 (Fit:1-3 & 4 to 1-7 & 8 )]
[4 Sizes - 4PCS (Fit: 1-7 & 8 ~2-3 & 8 u201D)]
[1-1 & 2 (Fit: 1-1 & 2 to 1-5 & 8 )]
[2-1 & 8 (Fit: 2-1 & 8 to 2-1 & 4 )]
[2 (Fit: 2 to 2-1 & 8 )]
[1-7 & 8 ( (Fit: 1-7 & 8 to 2 )]
Neoprene stopper that provides a mechanism to make it expandable. A tight fit will keep them from working their way out. Automotive Rubber Expansion Plug (1-7/8 inch to 2 inch) 47mm - 50mm,2-Pack Rubber Freeze Plug