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Ships within 48 hours · Estimated delivery Jul 20 - Jul 25
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Description
Altra 204 Insert And Outsert 250 SpineThe Altra Reinforced Concentric Outset System (A. R. C. O. S.) is designed for Altra Arrows 204 Shafts, offering unmatched durability and performance through its precise 7075 T6 aluminum construction. The insert secures into the arrow shaft at a depth of 0. 875 inches, while the outsert threads directly onto the insert, encapsulating the leading end of the arrow by 0. 43 inches for enhanced durability. Pre installed rubber O rings lock the outsert in
The Altra Reinforced Concentric Outset System (A.R.C.O.S.) is designed for Altra Arrows 204 Shafts, offering unmatched durability and performance through its precise 7075-T6 aluminum construction. The insert secures into the arrow shaft at a depth of 0.875 inches, while the outsert threads directly onto the insert, encapsulating the leading end of the arrow by 0.43 inches for enhanced durability. Pre-installed rubber O-rings lock the outsert in place, reducing vibration and improving concentricity for a more precise arrow setup and increased downrange accuracy.Features:Fits Altra Arrows 204 Shafts; Constructed from 7075-T6 aluminum for durability; Secure insert depth: 0.875 inches; Outsert encapsulates arrow end: 0.43 inches; Pre-installed rubber O-rings reduce vibration and improve concentricity; Comes in 12 pk QTY; Available in four sizes: 250, 300, 350, & 400 spine; 53gn Total Weight; Accepts micro FMS insert weights; Enhances downrange accuracy and precision
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.1 ★★★★★
Based on 18 reviews
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Product Reviews
★★★★★ 5
My Husband’s Favorite Socks
Size: Large, Color: (035) Steel / White / Black
The Under Armour Unisex Training Cotton No Show Socks have become my husband’s absolute favorite socks—and he’s pretty picky about socks.
Comfortable Fit:
They’re soft, comfortable, and fit well without being too tight. They stay in place all day with no slipping or bunching.
Great for Everyday Wear:
Perfect for workouts, walking, and everyday use. They provide just the right amount of cushioning without feeling bulky.
Durable & Long-Lasting:
These hold up really well through regular wear and washing. They keep their shape and don’t wear thin quickly.
Reliable Under Armour Quality:
You can tell they’re well made. Consistent quality that matches what you expect from Under Armour.
Overall Impression:
When someone has a favorite sock and keeps reaching for it, that says everything. These are comfortable, durable, and dependable.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 30, 2025
★★★★★ 5
Quality Under Armour socks
Size: Large, Color: (100) White / White / Black
Nice medium thick sock that is breathable but cushioned. It stays put in the show and doesn’t fall down. Fit is true to size, no show/minimal show
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Reviewed in the United States on May 2, 2026
★★★★★ 5
Perfect Pairs
Size: Large, Color: (100) White / White / Black
Very comfortable, soft & affordable..
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 19, 2026
★★★★★ 5
Excellent athletic socks
Size: Large, Color: (100) White / White / Black
Solid athletic socks at a great price. Not too thick, not too thin. Second time I've purchased them. They last longer than most socks I've used in the past too.
Only concern is the sizing. I may be reading the sizing chart wrong, but for my size 13 feet it says XL are the correct sock size. I've ordered Large twice and they're perfect. I would imagine the size Large socks would also fit up to size 14 shoe, but probably need to go with XL if foot is lager than 14.
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Reviewed in the United States on April 12, 2026
★★★★★ 4
Great product
Size: Large, Color: (035) Steel / White / Black
Comfortable fit perfect
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Reviewed in the United States on March 15, 2026
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