Stoppers come with 2 holes
Power Cord and Light Cord Holes

Stoppers have two holes with a slit for both holes.

• 5/16" for the Power Cord (Pump's Cord)
• 1/8" for the Light Cord  ( Small Round Light Cord)
   
• A2 - Size: 1" top diameter and tapers down to 3/4"
• B2 - Size 1-1/4" top diameter and tapers down to 1"
• C2 - Size 1-3/8" top diameter and tapers down to 1-3/16"
• D2 - Size 1-5/8" top diameter and tapers down to 1-3/8" 
• E2 - Size 1-3/4" top diameter and tapers down to 1-1/2"
• F2 - Size 2"  top diameter and tapers down to 1-5/8" 
• G2 - Size 2-1/8" top diameter anbd tapers down to 1-3/4"

Stoppers come with the 2 holes and 2 slits for the cords to be inserted easily.
Stoppers are 1" High 

We also have stopper plugs with NO hole, You can see them here. They are solid plugs.