PRODUCT DETAILS
The PROTO Half-Knuckle is and has been one of the most durable clamps on the market since PROTO’s inception in 2008. Designed and manufactured in San Diego, CA., by riders for riders. PROTO prides itself in being on the innovative forefront of freestyle scooter product development and design. Ride the original, ride PROTO. The Half-Knuckle can be used with threaded forks or ICS compression. The Half Knuckle will work with both standard and oversized bars. Strong and lightweight the Half Knuckle weighs in at only 00.304 Lbs. (00.14 Kg). The High Grade 6061 T-6 Aluminum is anodized for durability. Laser engraved with the PROTO Star Logo.
Features:
- For Standard and Oversized Bars
- 6061 T-6 Aluminum
- Includes 1 Shim and 2 Bolts
- Anodized with Laser Engraved Logo
- 100% Made in California
How to have more fun in the park
STEP 1
Select your products and proceed to checkout using secure payment methods.
STEP 2
Our team will carefully select your order from our warehouse and send it to you within 3-5 days
STEP 3
Ramp up the fun in the park!

Why choosing us
- Diverse Selection: Skates USA offers a wide variety of high-quality skateboards, bikes, skates, and scooters in various styles and colors from trusted brands—ensuring the perfect fit for every skill level.
- Expertise & Experience: With over 25 years in the skating industry, we provide expert guidance and top-quality products.
- Customer Satisfaction: Our online-only model guarantees fast service, reliable shipping, and a focus on meeting your needs.
- Affordable Quality: Get high-quality gear at affordable prices without compromising on performance.
- Free Shipping: Enjoy free U.S. shipping on orders over $50.