Prowler RED Magnetic 33mm Cock Ring

The Prowler RED Magnetic 33mm ring is a magnetic cock ring in polished stainless steel. Instead of forcing a solid metal band over the shaft, you open it, put it in place and close it with a magnetic lock, which makes a steel ring much easier to put on and take off.

Prowler designs it to be worn at the base of the penis, with a 33mm diameter for a snug but comfortable fit. A larger 38mm version of this magnetic cock ring is also available.

From Prowler RED’s product page. A dash means Prowler doesn’t publish it.

• Solid metal rings have to go on before you are hard and can be hard to remove; the magnetic lock means you can open this one instead.
• Steel feels heavier and firmer than silicone or TPE and can be warmed or cooled in water first.
• There is no stretch, so the size has to be right: measure before you choose between 33mm and 38mm.
• Use a little water-based lube so the ring slides into place without pulling skin.

If you want some give, a silicone ring is more forgiving. Here is how this magnetic cock ring compares with other rings we stock:

Live prices from our store. Prices updated November 2, 2026.

For sizing and how long to wear a ring, read our cock ring guide.

What is the Prowler magnetic cock ring made of?

Polished stainless steel, according to Prowler RED. It is not silicone and does not stretch.

How do I put a magnetic cock ring on?

Prowler’s method: open the ring, place it around the base of the penis while flaccid, then fit the missing piece back so the magnetic lock closes.

33mm or 38mm?

33mm is the inner diameter of this ring; Prowler also makes a 38mm version. A metal ring has no give, so if you are between sizes the larger one is the safer choice.

How do I take it off?

Separate the magnetic piece and the ring opens; you don’t have to slide a solid band back over. Take it off straight away if it feels painful, numb or too tight.

How do I clean it?

Prowler doesn’t publish care steps. Stainless steel is non-porous, so warm water and mild soap or a toy cleaner, then drying it fully, is the usual approach.

Browse all cock rings.