Angled view of the Bosch hole saw mandrel featuring a hex shank, threaded collar with locking pins, and a high-speed steel pilot bit.
Vertical profile view of the hole saw mandrel showing the alignment of the hex shank, locking mechanism, and pilot drill bit.
Infographic explaining the Quick Change universal hole saw system, showing how the adapter, mandrel, and hole saw connect, with text stating it fits all major brands.
Instructional graphic titled Change hole saw types or sizes in seconds, illustrating the three steps to attach the adapter, connect the mandrel, and release the hole saw.
Angled view of the Bosch hole saw mandrel featuring a hex shank, threaded collar with locking pins, and a high-speed steel pilot bit.
Vertical profile view of the hole saw mandrel showing the alignment of the hex shank, locking mechanism, and pilot drill bit.
Infographic explaining the Quick Change universal hole saw system, showing how the adapter, mandrel, and hole saw connect, with text stating it fits all major brands.
Instructional graphic titled Change hole saw types or sizes in seconds, illustrating the three steps to attach the adapter, connect the mandrel, and release the hole saw.
BOSCH

Bosch Standard Large Two Pin Hole Saw Mandrel HSBAL 7/16 Inch Hex Shank for 1-1/4 to 6 Inch Saws High Speed Steel

Only 1 left
SKU: HSBAL
$21.99 USD

Description

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SECURE AND STABLE HOLE SAW ATTACHMENT FOR PRECISION CUTTING

The Bosch HSBAL Standard Large Two-Pin Mandrel is the reliable connection point between your power drill and larger diameter hole saws. Designed for heavy-duty applications, this mandrel features a positive lock design where the hole saw threads onto the mandrel and is secured by two drive pins. This mechanism significantly minimizes wobble, ensuring cleaner, more accurate cuts and preventing thread stripping during high-torque use. It is an essential accessory for electricians, plumbers, and general contractors who require stability when cutting large holes.

Engineered for versatility and durability, this mandrel is constructed from high-speed steel to withstand the rigors of the job site. It features a robust 7/16-inch hex shank that provides a secure, non-slip grip in standard drill chucks. Compatible with hole saws ranging from 1-1/4 inches to 6 inches in diameter, the HSBAL fits all major brands, making it a universal solution for your hole cutting needs. Whether you are drilling through wood, metal, or plastic, this tool ensures your hole saw stays locked in place for maximum performance.

Key Features

  • Universal Fit: Compatible with hole saws sized 1-1/4 inches to 6 inches from all major brands.
  • Positive Lock Design: Two-pin locking mechanism engages the hole saw to minimize wobble and vibration.
  • Secure Shank: 7/16-inch hex shank prevents slippage in the drill chuck for consistent power transfer.
  • Durable Construction: Made from high-speed steel for long-lasting reliability in professional applications.
  • Standard Pilot Bit: Accommodates standard 1/4-inch pilot bits for accurate centering.
  • Easy Operation: Threaded connection allows for quick assembly and disassembly of the hole saw.

What's Included

(1) Bosch HSBAL Standard Large Two-Pin Mandrel

Specifications

Manufacturer Bosch
Part Number HSBAL
Type Hole Saw Mandrel
Shank Size 7/16 in.
Shank Type Hex
Hole Saw Compatibility 1-1/4 in. to 6 in.
Material High Speed Steel
Arbor Size 7/16 in.
Locking Mechanism Two-Pin Positive Lock
Product Weight 0.33 lbs

Pro-Tip: When using larger hole saws (over 2 inches), always use the drill's side handle to maintain control against high torque. Before engaging the drill, ensure the two pins on the mandrel are fully seated into the holes on the back of the saw cup to prevent the saw from locking onto the threads, which can make removal extremely difficult.