Greenlee 50191802 Bi-Metal Hole Saw, 4-1/2 IN Variable Pitch

Greenlee 50191802 Bi-Metal Hole Saw, 4-1/2 IN Variable Pitch

The Greenlee 50191802 Bi-Metal Hole Saw is a variable-pitch cutting tool built for electricians and installers who need a clean, accurate 4-1/2 IN hole diameter sized for 4.000 IN conduit penetrations. Constructed from durable bi-metal material with a variable-pitch tooth geometry, this hole saw delivers a 1-5/8 IN cutting size for reliable penetration through common building materials encountered in electrical rough-in and remodel work. It is engineered to pair with the Greenlee standard Arbor No. 37156 or the Quick Change Arbor No. 2801, giving installers the flexibility to match the saw to their existing arbor setup on the job site. Manufactured in the US, the 50191802 is sized precisely for professional electrical installation tasks where consistent hole diameter and long tool life matter.

Key Features

• Hole Diameter: Cuts a 4-1/2 IN hole diameter, sized specifically for 4.000 IN conduit applications.
• Cutting Size: 1-5/8 IN cutting depth for dependable penetration through wood, metal, and composite building materials.
• Durable Construction: Bi-metal build with a Variable Pitch tooth type resists wear and holds a sharp edge through repeated professional use.
• Compatible Arbors: Works with the standard Arbor No. 37156 or the Quick Change Arbor No. 2801 for fast, convenient bit swaps between jobs.
• Dimensions: Product measures 6.750 IN in length, 4.350 IN in width, and 1.850 IN in height, with a volume of 54.320625 CI.
• Country of Origin: Manufactured in the US for consistent quality control.

Technical Specifications

• Application: For 4.000 IN Conduit
• Country Of Origin: US
• Cutting Size: 1-5/8 IN
• Hole Diameter: 4-1/2 IN
• Product Height: 1.850 IN
• Product Length: 6.750 IN
• Product Type: Variable Pitch
• Product Width: 4.350 IN
• Use With Quick Change Arbor No: 2801
• Use With Standard Arbor No: 37156
• Volume: 54.320625 CI

Typical Applications

• Electrical Conduit Penetrations in Walls, Panels, and Enclosures
• Commercial and Industrial Electrical Installations
• Panelboard and Junction Box Knockout Cutting
• Renovation and New Construction Electrical Rough-In
• Cutting Through Wood, Metal, and Composite Building Materials

Why Greenlee?

Greenlee hole saws are built with bi-metal construction and variable-pitch tooth geometry to hold up under the repeated demands of professional electrical installation work. The 50191802 is precisely sized for 4.000 IN conduit and compatible with standard Greenlee arbors, making it a dependable addition to any electrician's tool kit. Choose Greenlee for consistent, code-compliant cutting performance on the job site, backed by US manufacturing and durable materials engineered for repeated use in demanding electrical environments.