The Mafell 207944 3mm Adapter Sleeve is a precision-ground reduction sleeve designed to adapt smaller router bits and milling cutters for use in standard 8mm tool holders. This sleeve provides a secure, accurate grip for 3mm micro-shank tooling, reducing runout and helping maintain clean cuts during fine precision routing and milling applications.

This adapter is fully compatible with the Mafell FM 1000 WS, FM 1000 PV-WS, and FM 1000 NC-WS Milling Motors, as well as the Mafell LO 55 Router. It inserts directly into the machine's primary holding fixture, allowing operators to execute quick tool changes without replacing the entire collet assembly.

Features & Benefits

• Precision Ground: Ensures accurate concentricity and minimizes bit runout for higher-quality surface finishes.
• Direct Reduction: Adapts 8mm native collets or tool-less holders to accept 3mm shank tooling.
• Broad Compatibility: Verified for use with Mafell FM 1000 WS, FM 1000 PV-WS, FM 1000 NC-WS, and LO 55 models.
• Quick Setup: Allows operators to switch to metric micro-bits rapidly without requiring a full collet swap.

Shipping: Beaver Industrial Supply offers free shipping on orders over $199, with the exception of Sawstop and Laguna, which require additional fees to be collected. Other exceptions apply as noted on product pages.

We reserve the right to determine the fastest and most cost-effective manner of transportation for all orders that qualify for free shipping. Our shipping carriers cannot deliver to PO box or U.S. military post office box addresses, such as APO and FPO, so we require a physical street address for delivery. We use USPS, which typically takes 2-8 days for delivery, depending on your location, for smaller items and UPS Ground for all other ground shipments under 150 pounds.

• Returns: We accept returns and exchanges for a fee up to 30 days in unopened, new, and unused condition in the original packaging. Exceptions apply.

Please note, NO REFUNDS will be given on any new, used, or damaged item if it is not returned in the original packaging, no matter what condition the packaging is in. If the item qualifies for free shipping, you will be charged the original shipping cost and are responsible for shipping the product back with the shipping carrier of your choice.

We must receive the item undamaged. We recommend you package it accordingly and purchase insurance for higher-priced items to ensure you receive the full refund minus any incurred fees as applicable. We reserve the right to refuse the return of accessories.

Because items are your responsibility until they reach us, we recommend that you send the parcel using a delivery service that insures you of the value of the goods. Return shipping is at the customer's cost. At Beaver Industrial Supply’s discretion, delivery charges can be refunded if the goods are defective.

Returns require a return authorization number. Please call customer service at 314-773-5999 or submit a customer service inquiry to start the exchange or return process and receive an authorization number.

Machinery too large for parcel shipment (palletized or crated) is only returnable if there is a material defect that cannot be resolved by replacing components.