Dottie HPC312 Hole Saw, 3-1/2" Cup 3" Conduit

Get fast, consistent conduit penetrations for security, surveillance and low-voltage installations with the Dottie HPC312 hole saw cup. Designed as a 3-1/2" cup to produce a clean opening for standard 3" conduit, this replacement cup uses laser-etched centering lines for instant alignment and clear size/part identification — speeding installs and reducing errors. Constructed from High Speed Alloy Steel (HSS), the HPC312 resists wear for longer service life and fewer tool changes, keeping crews productive on mission-critical jobs.

Because the HPC312 cups are interchangeable with competing brands, contractors can standardize tooling across teams and avoid delays when swapping parts. The precise tooth geometry minimizes burrs and rework, improving conduit fit and simplifying cable pulls for CCTV, access control, monitoring and network cabling. Ideal for electricians, low-voltage technicians and security integrators, the Dottie HPC312 hole saw cup delivers reliable performance where uptime and clean cuts matter.

Keep projects on schedule — order Dottie HPC312 replacement cups for your next security, surveillance or networking installation.

• Deliver precise, repeatable 3" conduit openings to speed installations and reduce rework
• Laser-etched centering lines for instant alignment and faster, more accurate cuts
• High Speed Alloy Steel (HSS) construction for longer life and fewer replacements on job sites
• Compatible with competing brands to simplify inventory and minimize downtime
• Clean tooth geometry reduces burrs and improves conduit fit for security, surveillance, and network cabling