3/8 x 70mm brad point boring bit gives a defined brad point cutting action, which helps the bit start accurately in the workpiece and keep the hole on line in repetitive boring setups. The left hand rotation design means this bit rotates counterclockwise, matching boring machines and drill press heads that are built to turn in that direction so the cutting edges track correctly. The 70mm overall length pairs with common line-boring and casework drilling layouts, helping the bit reach through typical stock thickness while staying securely held in the spindle. As an Amana Tool product, this boring bit is built to meet professional shop expectations for consistent cutting behavior across production runs.
Amana Tool brad point bit with 10mm shank mounts directly into boring machines designed for that shank diameter, giving a firm grip that helps control runout at the cutting edge. The left hand rotation requirement means the spindle must turn counterclockwise so the brad point and spurs cut into the material instead of rubbing, which supports consistent feed and hole quality. For drill presses, the 3/8 inch shank configuration lets the bit seat properly in compatible chucks, aligning the brad point along the spindle centerline for accurate vertical boring. Using the specified shank styles with the appropriate machines keeps the cutting edges working in their intended orientation during repeated production drilling.
Brad point boring bit 3/8mmx35mm LH is described for boring machines with a 10mm shank, placing it in fixed, multi-spindle, or line-boring environments where precise hole spacing is built into the machine table. In these setups, the 3/8 inch cutting diameter aligns with common cabinet and casework hole patterns that rely on repeatable spacing for shelf pins, dowels, or hardware-related bores. The left hand label signals that the bit is matched to counterclockwise-rotating heads, so it works with machines that are specifically oriented in that direction across the bank of spindles. The same cutting end is also designated for drill presses with a 3/8 inch shank, tying it into single-spindle shop drill presses that handle accurate vertical bores in parts that are too large or awkward for other equipment. This dual machine reference positions the bit as a dedicated boring and drill press tool rather than a portable drill or router tool.
Brad point boring bit left hand rotation is specified because the cutting geometry is ground to work as the spindle turns counterclockwise, so the brad point and lips slice into the material instead of scraping, which supports efficient chip formation. When that geometry is run in the matching direction on the correct machine, the point can track a layout mark and reduce wandering as the bit enters the surface. The 10mm shank dimension connects directly to boring machines built around metric shank tooling, which helps the bit seat deeply in the spindle and stay secure during continuous boring cycles. For drill presses, the 3/8 inch shank reference means the tool is dimensioned to fit chucks sized for that shank, keeping the bit centered to deliver straight, repeatable bores. The manufacturer part number 304009 identifies this exact Amana Tool pattern, allowing shops to call out the same bit across multiple stations so each spindle uses the same geometry and diameter for consistent results.
The 3/8 x 70mm brad point boring bit is described for boring machines with a 10mm shank and for drill presses with a 3/8 inch shank, so it serves fixed and single-spindle shop setups.
The left hand rotation means the bit turns counterclockwise, so its brad point and cutting edges engage the material in their intended direction, supporting steady feed and controlled hole cutting.
The 3/8 inch cutting end drills a 3/8 inch diameter hole, which matches many cabinet, casework, and jig patterns that are built around that standard size.
The 10mm shank sizing matches boring machines built for 10mm tooling, allowing a secure grip in the spindle so the bit runs true across repeated boring cycles.
The brad point boring bit is described for boring machines and drill presses and specifically states it is not for use in portable drills or routers.
Amana Tool 304009 designates this 3/8 x 70mm left hand brad point boring bit, so using that number helps match the same diameter, length, and rotation style across orders.
The 3/8 x 70mm brad point boring bit, left hand, 10mm shank focuses on accurate boring in machines and drill presses built for its shank sizes and counterclockwise rotation. The brad point geometry, paired with the specified shanks, supports centered, repeatable holes in cabinet and woodworking layouts. Using the Amana Tool 304009 identification keeps this specific left hand boring bit consistent across shop stations and reorders. For dedicated boring machine and drill press work that matches these details, this bit is aligned to the task.
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