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The Master Series Scrotum Egg Shells with Spikes are a stainless steel CBT testicle cage for experienced players who enjoy pressure, weight and a controlled edge of pain. Two hinged eggs close around the testicles, lock in place and carry screws that a partner can tighten one by one. This is advanced cock and ball torture gear, suited only to people who already know their limits and play with someone they trust.

How the egg shells close

Each shell opens on a swivel. With a testicle inside each egg and the scrotal skin running through the 0.36-inch spacer between them, you close the shell, fold the hinged screw between the two curved bars and tighten the nut. As the nut goes down it reveals a small hole in the pin, and one of the two included locks fits through it to hold the egg shut. A short metal bar links the two eggs, keeping them side by side.

Adding pressure

Several small screws are set around the outside of each egg, with tips that reach up to 0.8 inches inward. Allen wrenches come in the set for turning them. Tighten one screw a quarter turn, then move to the next, working around both eggs so the pressure stays even. Go slowly and talk throughout; the point is to find an edge, not to go past it. Loosen everything at once if there's sharp pain, numbness or colour change.

Weight and temperature

Stainless steel is heavy on its own, and the connecting bar has a small O-ring at its centre where you can hang a weight for a downward pull, much like a ball stretcher. Start light and add more over separate sessions. Steel also holds temperature well: warm the eggs in a bowl of warm water or chill them for a few minutes, and test against your inner wrist before they go on.

Safety for this CBT testicle cage

Master Series states that this device is for experienced users only. Before locking it, put the keys somewhere you can reach instantly, because the maker warns that a lost key can mean a trip to an emergency room to have it removed. Check your measurements against the egg size: 1.65 inches wide and 2.4 inches long, with no stretch. Don't wear it alone, don't sleep in it, and keep sessions short at first. A safe word, or a clear signal if the wearer is gagged, is essential.

Cleaning

Wash the eggs in warm, soapy water after use, then spray them with toy cleaner. Because the set is all stainless steel, it can also go in the dishwasher or soak in a cleaning solution for a deeper clean. Dry the screws, hinge and lock holes thoroughly before storing so nothing seizes. Keep the keys and Allen wrenches in the same pouch as the eggs, so nothing is missing the next time you play.

Specifications

  • Brand: Master Series, Scrotum Egg Shells with Spikes
  • Type: locking CBT testicle cages joined by a bar, with adjustable pressure screws
  • Material: stainless steel
  • Egg: 1.65" wide x 2.4" long; scrotum spacer 0.36"
  • Pin spikes: up to 0.8" long
  • Includes: two locks with keys, Allen wrenches
  • Packaging: bulk pack
  • For experienced users only
  • Colour: metal

See more from Master Series, browse our BDSM gear, or read what a ball stretcher does.

Helpful Information

Frequently Asked Questions

Helpful answers about Master Series Scrotum Egg Shells with Spikes – Bulk Pack.

What are the Master Series Scrotum Egg Shells used for?

The Master Series Scrotum Egg Shells are for cock and ball torture (CBT). Each stainless steel egg closes around a testicle, and screws around the shell can be tightened to add pressure. A connecting bar can carry weights. They're intended for experienced players only.

How do I put on the Master Series egg shells?

Open each egg, place a testicle inside and run the scrotal skin through the 0.36-inch spacer. Close the shell, fold the hinged screw between the bars and tighten the nut until the lock hole shows. Fit a lock only once the shell feels secure and comfortable.

Will the Master Series Scrotum Egg Shells fit me?

Each egg is 1.65 inches wide and 2.4 inches long, and steel has no stretch. If your testicles are larger than that, or the 0.36-inch spacer pinches, the shells won't be comfortable. Hold the open eggs up against yourself to judge the size before closing them.

How tight should I make the screws?

Tighten the screws on the Master Series eggs gradually, a quarter turn each, moving around both eggs so the pressure stays even. Stop well before sharp pain. Loosen everything immediately if there's numbness, coldness, swelling or a colour change.

Is it safe to lock the Master Series Scrotum Egg Shells?

Only if the keys are within instant reach. Master Series warns that losing them can mean needing emergency help to remove the eggs. Keep a spare key separate, never lock them on someone and leave the room, and don't wear them while sleeping.

Can I add weight to the Master Series egg shells?

Yes. The bar between the eggs has a small O-ring at its centre for hanging a weight, which adds a ball-stretching pull. Start with very little and increase over separate sessions; read what a ball stretcher does for background.

How do I clean the Master Series Scrotum Egg Shells?

Wash them in warm, soapy water and spray with toy cleaner after each use. Since they're all stainless steel, they can also go through the dishwasher or soak in a cleaning solution. Dry the screws and hinges fully so they don't stiffen.

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