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Ships within 48 hours Β· Estimated delivery Jul 17 - Jul 22
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Description
Altra Micro Insert Weight 20 GrainsThe Pinnacle of Precision & Performance Altra Forward Mass System (FMS) micro insert weight system offers fine adjustment of total arrow weight to increase F. O. C. and improve down range accuracy. The micro insert weights are designed for use with all Altra 166 arrows and are stackable for infinite weight adjustment. Features: Comes in 12 pk QTY; Available 10 & 20 Grains; Blue Loctite recommended for assembly
The Pinnacle of Precision & Performance Altra Forward Mass System (FMS) micro insert weight system offers fine adjustment of total arrow weight to increase F.O.C. and improve down range accuracy. The micro insert weights are designed for use with all Altra 166 arrows and are stackable for infinite weight adjustment.Features:Comes in 12 pk QTY;Available 10 & 20 Grains;Blue Loctite recommended for assembly
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
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Based on 23 reviews
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Product Reviews
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1
MONKEYBUSINESS BOOK
Format: Paperback
Get a clue. You shop out your sources like a monkey in a candy store.
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Reviewed in the United States on October 7, 2017
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5
Affordable
Style: High Mileage 150K, Size: 5 qt (Pack of 1), Configuration: 5W-20
Good oil
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Reviewed in the United States on May 24, 2026
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5
Great choice for your older Vehicle.
Style: High Mileage 150K, Size: 5 qt (Pack of 1), Configuration: 5W-30
Trusted and put to use many times with my 2006 Pontiac G6. I have over 140,000 miles on her and she is still reliable and running great.
I love the fact that it also helps clean away the built up grime etc. in the Engine
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Reviewed in the United States on March 25, 2026
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5
Works
Style: High Mileage 150K, Size: 5 qt (Pack of 1), Configuration: 10W-30
The seal conditioners seem to be working as Iβm seeing less oil dripping onto the ground now under my jeep
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Reviewed in the United States on April 3, 2026
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5
Good
Style: High Mileage 150K, Size: 5 qt (Pack of 1), Configuration: 5W-30
Good oil. Stopped leak
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Reviewed in the United States on April 1, 2026