The Mafell 090099 12 mm HW Dowel Drill Bit is a high-performance carbide-tipped cutting tool engineered for precision joinery applications using Mafell Duo-Dowel systems, such as the DDF 40 and DD40P. Ideal for professional woodworkers and cabinet makers, it produces clean, accurate, and splinter-free holes for heavy-duty dowel connections.

Featuring robust carbide cutting edges, this bit is built to withstand high-volume shop environments while maintaining dimensional accuracy across solid wood, MDF, and plywood. Sold as a single replacement or expansion piece, it enables reliable workpiece alignment and strong structural joinery.

Features & Benefits

• Carbide-Tipped Construction: Premium HW cutting edges deliver superior durability and extended wear resistance in abrasive panel materials and solid woods.
• Precision Tolerances: Engineered to exact metric dimensions to ensure snug, secure dowel fits and flawless joint alignment.
• Broad System Compatibility: Fully compatible with current Mafell DDF 40 and DD40P systems, as well as legacy models like the DD40G, DD40, and Hoffman PDS-32.
• Individual Packaging: Supplied as a single unit to easily replace individual worn bits or expand your tooling selection.

What's Included

• (1) 12 mm HW Dowel Drill Bit (SKU 090099)

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.