Muzzle orders placed now will ship within 2-4 weeks, excluding new sizes.

Chicago Screw Upgrade

In Stock

Regular price £3.50 | Save £-3.50 (Liquid error (sections/product-template line 180): divided by 0% off)



Upgrade your muzzle form rivets to Chicago screws, so that in the future you are able to swap and change your Biothane strapping, without ever needing to replace your basket to get new colour combinations! You can mix and match different Biothane sets, so every piece can be a different colour! or you can simply just replace your Biothane strapping at the end of every season.

You are also better able to make small modifications to your muzzle fit, without cutting the Biothane strapping.

Please note - Chicago screws can sometimes gradually come undone over time, therefore you must regularly check to ensure that they are still secure. Alternatively, once you have your ideal fit or colour combination, you can 'loc-tite' your chicago screws closed.  Standard rivets cannot be undone.

If you would like a spare set of Chicago screws with your order in case you miss-place any, or would like multiple colours to allow you to further personalise your muzzle, add a second to your cart. If you need more Chicago screws in the future for any reason, you can return and purchase a set any time.



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Muzzles are hand-made to order. Currently, we are experiencing a backlog of orders, We will send you an email confirming a shipping time estimation upon completion of your order. You can expect your order to be delivered between 1 and 4 weeks. Accessories are typically dispatched within 1-3 days.

Returns & Refunds

We have a 30-day return policy, which means you have 30 days after receiving your item to request a return.

To be eligible for a return, your item must be in the same condition that you received it, unworn or unused, with tags, and in its original packaging. You’ll also need the receipt or proof of purchase.

To start a return, you can contact us at

If your return is accepted, we’ll send you a return shipping label, as well as instructions on how and where to send your package. Items sent back to us without first requesting a return will not be accepted.

Damages and issues

Please inspect your order upon reception and contact us immediately if the item is defective, damaged or if you receive the wrong item, so that we can evaluate the issue and make it right.


The fastest way to ensure you get what you want is to return the item you have, and once the return is accepted, make a separate purchase for the new item.

European Union 14 day cooling off period

Notwithstanding the above, if the merchandise is being shipped into the European Union, you have the right to cancel or return your order within 14 days, for any reason and without a justification. As above, your item must be in the same condition that you received it, unworn or unused, with tags, and in its original packaging. You’ll also need the receipt or proof of purchase.


We will notify you once we’ve received and inspected your return, and let you know if the refund was approved or not. If approved, you’ll be automatically refunded on your original payment method within 10 business days. Please remember it can take some time for your bank or credit card company to process and post the refund too.

If more than 15 business days have passed since we’ve approved your return, please contact us at

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