Arrow Spin Tester & Squaring Device
Stop guessing whether your arrows are true.
Spin test your arrows to ensure they won't wobble when you take the big shot, or square the ends to correct wobble as needed.
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Tighter groups in just minutes.
Did you know?
Squaring both ends of an arrow has been proven to produce tighter groups.
With the Mod Archery Arrow Spin Tester + Squaring Device, you can square each end of the shaft, then spin test for wobble at each stage of your build, from bare shaft to broadhead install.
In addition, check runout with the included runout indicator that stows away neatly on the squaring post.
What's In the Box
- Tabletop arrow spinner
- Squaring post with pre-installed sandpaper
- Magnet for runout indication with pre-installed white sticker
- Silver Sharpie
- 3 additional sandpaper
- 4 additional white stickers
Specs
Overall Length: 17"
Overall Width: 3.25"
Overall Height: 3.25"
Returns + Warranty
Shipping: Each of our shipments is insured. If a spinner arrives broken, simply email us within 7 days of delivery, and we will send out a replacement part for any broken piece.
Returns: If you'd like to send back your spinner, you can do so within 30 days. Buyer pays shipping.
Get Confident In Your Arrows
In a matter of minutes, you can know with confidence how your arrows will fly. If you notice wobble, use the included squaring post to ensure each end is perfect.
Square Both Ends
Use the Silver Sharpie to mark each cut end of the arrow shaft. Then, using the squaring attachment, lightly roll each end across the sandpaper until all silver disappears.
Spin Test
Spin your arrow across the bearings and watch for wobble throughout the shaft.
Check Runout
Rotate your broadhead against the runout indicator to determine if it stays true or jumps around.
Frequently Asked Questions
Does squaring arrow ends actually improve accuracy?
Yes. Squaring ensures inserts and outserts seat perfectly flush against the carbon shaft. This helps broadheads spin truer, reduces wobble, and creates more consistent arrow flight and tighter groups.
What causes arrows to wobble?
Arrow wobble is commonly caused by:
- Crooked inserts
- Unsquared arrow ends
- Bent components
- Damaged shafts
- Points that aren't perfectly aligned
A spin tester is the quickest way to diagnose the problem.
How often should I spin test my arrows?
You should spin test:
- After installing inserts
- Before fletching
- After installing broadheads
- Anytime an arrow impacts something hard
