Spare Parts HardWare Deuce


The SpareParts Deuce is a unique strapon harness designed to accommodate a penis. Great for people wanting to explore double penetration or those who struggle with erectile dysfunction.   

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The SpareParts Deuce is a harness which has been specifically designed for penis-owners. This comfortable fabric harness has two holes, one for a dildo and one for your penis, which can be used simultaneously for for double penetration! It has a comfortable pouch which cups the testicles (and the penis if you want), without any pinching or chafing. This makes this harness a great choice for people with erectile dysfunction who want to enjoy the intimacy of sex with a partner. With SpareParts highly flexible O-ring the Deuce harness can securely fit toys 3.17-5.71 cm in diameter. A fabric flap separates any dildo base from your skin for added comfort.

Constructed with a padded waist strap and adjustable leg straps the SpareParts Deuce gives you superior comfort and control. With velcro and sliding buckle fastenings you can ensure exactly the right fit. Made with a Nylon and spandex blend, the Deuce is strong, yet breathable. The fabric wicks away moisture keeping you cool and comfy even during wet and messy play and is easy to clean. It can be hand-washed or machine washed on a gentle cycle. The Deuce is available in two sizes and is fully adjustable. See below for information about sizing.

  • Materials: Nylon, Spandex
  • Colour: Black
  • Power source: None
  • Manufacturer: SpareParts HardWare
  • Waterproof: Yes
  • Warranty: 1 year warranty provided by manufacturer  
DeuceBeltLeg StrapsCircumference o-RingCircumference of Penis Opening
Size A20 - 50 inches
50.8 - 127 cm
10 - 16 inches
25.4 - 40.64 cm
3.92 - 6.28 inches
9.95 - 15.95 cm
4.71 - 5.89 inches
11.96 - 14.96 cm
Size B35 - 65 inches
88.9 - 165 cm
14 - 24 inches
35.56 - 60.96 cm
3.92 - 6.28 inches
9.95 - 15.95 cm
4.71 - 5.89 inches
11.96 - 14.96 cm


For Deuce you will need to consider Belt measurements (hips), Leg measurements (thighs) and penis measurement (girth only) to determine which Deuce will produce the best fit for you, or your partner.

Size A or Size B:

Follow these simple steps to determine which Deuce product will fit you perfectly!

Measure for the belt:

Wrap measuring tape around your hips, where you would wear your belt.  Take the number where the tape measure completes and crosses over itself.  You should add a few (3-4) inches to this measurement for size fluctuation and room for sizing adjustment.  Take the measurement and see size chart above for Belt and determine which belt would be best.  

(You should be able to select a size that is reflective of your trouser or belt size.  So if you wear a size 32 in trousers, and they fit you securely, you should select the Deuce™ that best fits 32 inches).

Measure for the Leg straps:

  1. To measure which size is best for the wearer; first figure out where you will be wearing it on your hips.  The best way to do this is to put on a regular belt, as this will help you to have a place to start and finish measurement on the next step.
  2. Next take the tape measure and start by taking the end of it and holding it in the center of the belt (in line with your belly button).  
  3. Slide the measuring tape between your legs.  Select which leg you want to use for measuring and wrap the measuring tape taught around the back of that leg (around the butt check) and then bring it back around to the front back to the center of the belt where you started the measurement. In essence you should have the measuring tape wrapped fully around one of your legs tautly (but not so tight it restricts blood flow) with the start and end point of the measuring tape being the front center of your belt.
  4. Take the leg strap measurement, and then subtract 15 inches, this should give you the length of leg strap you need for the harness to fit securely but still be comfortable. See size charge above Leg Straps.

Additional information


Deuce, Deuce Magnum




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