Bosch HSBAMP Large Hole Saw Mandrel Arbor 3/8 Inch Shank Two Pin Locking Fits 1-1/4 to 6 Inch Saws Universal Fit

ELIMINATE WOBBLE WITH POSITIVE LOCK ENGAGEMENT

Secure your heavy-duty drilling applications with the Bosch HSBAMP Standard Large Two-Pin Mandrel. Designed for professional reliability, this arbor is engineered to support hole saws ranging from 1-1/4 inches to 6 inches in diameter. The centerpiece of its design is the positive lock mechanism featuring two sturdy drive pins. Once the hole saw is threaded onto the mandrel, these pins engage the base of the cup to lock it firmly in place. This not only minimizes wobble for cleaner, more accurate holes but also prevents the saw from seizing on the threads, ensuring easy removal after high-torque drilling.

Versatility is key on the job site, and the HSBAMP delivers with a 3/8-inch hex shank that fits standard 3/8-inch and 1/2-inch drill chucks. It is universally compatible, fitting all major brands of hole saws that utilize the standard large mounting configuration. Whether you are a plumber, electrician, or general contractor, this mandrel provides the robust connection needed to transfer power efficiently from your drill to the cutting edge without slipping or stripping.

Key Features

• Two-Pin Locking Design: Positive lock drive pins prevent the hole saw from overtightening and locking up on the threads.
• Wide Compatibility: Fits all standard hole saws ranging from 1-1/4 inches to 6 inches in diameter.
• Universal Shank: 3/8-inch hex shank ensures a secure grip in both 3/8-inch and 1/2-inch drill chucks.
• Wobble Reduction: Solid engagement minimizes vibration and runout for precise hole placement.
• Standard Fit: Threads easily onto all major brands of standard hole saws.
• Durable Construction: Manufactured from hardened steel for long-lasting durability in tough work environments.

What's Included

(1) Bosch HSBAMP Large Two-Pin Mandrel (Pilot Bit Sold Separately)

Specifications

Pro-Tip: Before you start drilling, hand-tighten the hole saw onto the mandrel threads until it stops, then back it off slightly to align the drive holes with the pins. Push the locking collar forward until the pins snap fully into the hole saw cap. This ensures the torque is carried by the pins, not the threads, making it incredibly easy to unscrew the saw when you are finished.