Product Information
Product Details
The all-new 15mm Twist adapter offers you a consolidated option to adapt to proprietary M22 fittings that, previously kept you from upgrading the stock guns provided by the manufacturer. Standard pressure washers will have a 14mm stem required, however, in the image provided you can see the enlarged stem receiver. Some manufacturers have changed to 15mm to prevent you from upgrading through the use of aftermarket accessories, until now!
This premium adapter has been quality tested and certified by MTM Hydro to fit a variety of hose outlets including select popular models of Sunjoe, Ryobi, AR, and Greenworks so that you can, now, upgrade your guns and lance setups to MTM Hydroโs Italian SG series. Keep in mind, you could also upgrade your entire setup to Kobrajet hose with the use of the 24.5005 fittings for these same residential pressure washers.
Shipping & Delivery
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Fast nationwide shipping via UPS
Most orders arrive within 5โ10 business days. -
Direct-from-manufacturer items may take up to 14 business days
If a product will take longer than expected, a PowerWash.com account executive will contact you. -
Backorder notifications
If an item becomes unavailable or delayed, our team will notify you immediately with options. -
Freight delivery for large equipment
Oversized items ship by truck freight. Lift-gate service is available if needed. -
Alaska & Hawaii shipping
Delivery to AK/HI may take up to 30 business days. (Some chemical products cannot ship to AK/HI.) -
International shipping available
We ship to most countries worldwide. Call 1-800-433-2113 for rates. -
Order minimum
Orders under $15 may incur a minimum order fee. -
Track your order anytime
You can check your order status using the Orders & Returns page.
Returns & Warranty
30-Day Return Window (Unused Items)
Unused products in original packaging can be returned within 30 days of delivery.
Simple Return Process
Just contact our team to receive an RMA (Return Authorization) before sending anything back.
Restocking Fee
Returns may be subject to a 20% restocking fee.
Non-Returnable Items
Due to safety and usage factors, the following items cannot be returned:
โ Pressure washers (covered under warranty only)
โ Chemicals / hazmat products
โ Custom or special-order equipment
Manufacturer Warranties Apply
Many products are backed by manufacturer warranties (pumps, engines, accessories, etc.).
Coverage varies by brand and product type.
Defective or Damaged Items
If something arrives damaged or defective, contact us immediately so we can make it right.
Support
Support & Questions
Talk to a real pressure washing expert
Our team helps contractors choose the right equipment, chemicals, and setup.
Need help before ordering?
We can help you confirm:
โ Proper sizing (GPM, PSI, fittings)
โ Product compatibility
โ Best setup for your job
Support after purchase
Weโre here to help with setup, usage, and troubleshooting.
Call or speak with our team
ย 1-800-433-2113
Fast response from experienced staff
No call centers โ youโll speak with someone who understands the equipment.
Get It Right The First Time
No guesswork. No wrong orders.
- Fast Shipping
- Contractor Support
- Financing Available

