Diablo DHS17SPL 17-Piece Bi-Metal Hole Saw Set for Plumbers — a purpose-built kit from Freud/Diablo engineered to accelerate every plumbing cut. Designed to handle the demanding tasks you face on the job site, this set combines reliability with speed to keep your projects moving.

The Diablo 17-Piece Hole Saw Set for Plumbers features 11 bi-metal hole saw cups, two SnapLock PLUS™ mandrels, two pilot bits and two adaptor nuts (1/2” and 5/8”) for quick and easy hole saw cup changes for maximum job performance. This combination delivers faster cutting performance and increased productivity versus standard bi-metal hole saws, so you can tackle multiple pipe materials—PVC, copper, steel, and more—with confidence. The Snap-Lock Plus™ Mandrel System simplifies attachment and enables fast, secure mounting, reducing downtime between sizes.

• 11 bi-metal hole saw cups ready to cut through a range of plumbing materials, from PVC drainage to copper and light steel piping.
• Two SnapLock PLUS™ mandrels for tool-free, quick cup changes that keep you on the job longer with fewer interruptions.
• Two pilot bits help you start holes accurately and maintain true alignment as you work.
• Two adaptor nuts (1/2” and 5/8”) for versatile mounting options and faster setup.

Why this set stands out

• Faster cutting performance compared to standard bi-metal hole saw kits, meaning you complete more tasks in less time.
• Elegant integration of the SnapLock PLUS Mandrel System, which minimizes fuss during cup changes and ensures secure, repeatable mounting.
• Designed specifically for plumbers—handles common in-wall and behind-wall cuts with confidence, reducing rework and material waste.

Ideal use cases

• Drilling clean, precise holes in PVC drain pipes and fittings for sanitary lines.
• Sizing copper and steel water lines without purple-brain moments or fraying edges.
• Creating access holes for pipe inspections, fixtures, and valve installations in tight spaces.

Practical tips for best results

• Match the cup size to the bore you need, then secure it with the SnapLock PLUS mandrel for rapid changes.
• Use steady, moderate feed pressure and keep the cut perpendicular to the work surface to prevent wandering or tooth snag.
• Lubricate when cutting metal portions to minimize heat buildup and extend blade life.
• Center-punch the pilot bit location to ensure a clean start, especially on hard materials or thicker walls.

Who should consider the Diablo DHS17SPL set? Professional plumbers, HVAC installers, and serious DIYers tackling multi-material plumbing projects will appreciate the speed, reliability, and ease of use. If you frequently switch between PVC, copper, and steel in confined spaces, this 17-piece kit provides a coordinated system that keeps your workflow smooth and productive.