Infinity Tools 1/2″ Shank Box Joint Router Bit

The Infinity Tools 1/2″ Shank Box Joint Router Bit makes it easy to cut strong, perfectly spaced box joints (also called finger joints) on your router table. Outfitted with five 5/32″-kerf micro-grain carbide slot cutters and three interchangeable bearings, this set produces crisp interlocking fingers for drawers, boxes, crates, and casework — one of the most useful additions to any setup.

Why woodworkers love box joints

The interlocking fingers of a well-made box joint are both beautiful and remarkably strong, thanks to the large amount of long-grain glue surface. You’ll find them on everything from fine jewelry boxes and kitchen drawers to shop crates and storage bins. They’re quick to cut, easy to design, and built to last.

Built for accuracy and long life

The five micro-grain carbide-tipped slot cutters hold their edge far longer than standard tooling. The 1/2″ machined-steel arbor lets you rout fingers in stock up to 1-9/16″ tall in a single pass, or up to 3-1/8″ tall in two passes. Three included bearings let you set cutting depths of 1/4″, 3/8″, and 1/2″ with confidence.

Key specifications

Shank: 1/2″

Cutter diameter: 1-7/8″

Cutter height: 1-13/32″

Joint size: 5/16″ fingers (5 x 5/32″ kerf cutters)

Bearings included: BR-105 (1/2″ stock), BR-116 (3/8″ stock), BR-118 (1/4″ stock)

Max single-pass height: 1-9/16″ (up to 3-1/8″ in two passes)

Pairs well with

Run this bit in a for safe, repeatable joints, and explore more such as dovetail and finger-joint profiles. For drawer and cabinet builds, see our complete collection.