Hollow Buttplugs

A hollow butt plug has an opening running through the center—this provides a unique sensation and allows for specific uses that a standard plug cannot. Here you’ll find hollow butt plugs and tunnel plugs made of silicone, metal, and plastic. Check out the full selection of all butt plugs or return to all anal toys.

What is a hollow butt plug?

A hollow butt plug — also known as a tunnel plug or hollow plug — is an anal plug with an open channel running through the center. Unlike a standard butt plug, which is solid, a hollow plug has a continuous opening from top to bottom. That opening can be narrow — just a few millimeters — or wide enough for penetration. Hollow butt plugs are also used in medical play contexts and are popular among users who want visual contact with the anal canal.

Why choose a hollow butt plug?

The sensation of a hollow plug differs from that of a solid plug: the opening provides a feeling of exposure and openness that isn’t possible with a closed plug. Hollow plugs are also used as a passageway—for penetration through the opening while the plug is being worn. Some models are specifically designed for use in combination with other toys. Well-known brands in this segment include Oxballs (Pighole)—a model designed specifically for this purpose. Always use anal lubricant.

Types of hollow butt plugs

Tunnel plug narrow

A narrow opening through the center of the plug—wide enough for blowing through or visual contact, but not for penetration. Provides a sense of openness without active penetration through the tunnel. Most common as an introduction to hollow plugs.

Wide tunnel plug

A wider opening that allows for penetration through the tunnel. Requires experience with anal stimulation due to the wider outer diameter needed for a usable tunnel diameter. Used in advanced anal play.

Oxballs Pighole and similar models

Specific models designed for tunnel use, made of soft silicone or TPR. The Oxballs Pighole is one of the best-known hollow plugs and has a characteristic funnel shape. Popular among users specifically seeking this type of stimulation.

Metal hollow butt plug

Rigid tunnel plugs made of stainless steel. Provide maximum control over the opening diameter and are easy to sterilize. Also used in medical play for visual inspection.

What should you look for in a hollow butt plug?

Check both the outer diameter and the tunnel diameter—both are relevant to your choice. Start with a model where the outer diameter is comparable to what you comfortably wear with a regular plug. Clean a hollow plug thoroughly — the tunnel must be completely rinsed out after use. Use a fine brush if the channel cannot be fully cleaned with water. Always use plenty of anal lubricant.

Frequently Asked Questions About Hollow Butt Plugs

What is the difference between a hollow butt plug and an expanding butt plug?

A hollow plug has a fixed opening that does not change—the tunnel is a permanent opening through the center. An expanding plug changes size after insertion via a mechanism. Both provide a feeling of openness, but in fundamentally different ways.

Is a hollow butt plug suitable for beginners?

Tunnel plugs with a smaller outer diameter are suitable for users with some experience in anal stimulation. Do not start with a hollow plug as your very first anal toy—gain experience with regular butt plugs first before switching to a hollow variant.

How do I clean a hollow butt plug?

Rinse the tunnel thoroughly with warm water. Use a fine cleaning brush for narrow tunnels that cannot be fully rinsed through. Silicone hollow plugs can be boiled if they do not contain any electronic parts. Metal models can be sterilized by boiling or in the dishwasher. Allow to dry completely before storing.