INGCO Professional 18-Piece Plumber & Electrician Bi-Metal Hole Saw Set (AKH0021)

The INGCO AKH0021 is a professional-grade master hole saw set engineered specifically to handle the everyday demands of plumbers, electricians, and mechanical contractors. Combining two distinct, application-focused profiles into a single 18-piece package, this master kit pairs the 9-Piece Plumber's Set (AKH0091) and the 9-Piece Electrician's Set (AKH0092). It provides a comprehensive range of dimensions optimized for boring perfect, burr-free passes for conduits, copper piping, PVC drainage lines, and junction boxes.  

The defining feature of the AKH0021 is its high-performance material construction. Every hole saw in this matrix is crafted from premium HSS M3 Bi-Metal, an alloy engineered for maximum heat resilience, high tooth-toughness, and long-term edge retention. This allows the saws to cut smoothly through varying structural substrates, including sheet steel, aluminum, brass, plastics, PVC, and dense timber. Complete with heavy-duty hex arbors, pilot drills, and thread adapters, the set is organized inside an impact-resistant structural carrying case to keep your cutting layout clean and travel-ready.  

Technical Specifications

• Model Number: AKH0021  

• Classification: Professional-Grade Cutting Tool Accessories

• Core Material: High-Speed Steel (HSS) M3 Bi-Metal Construction  

• Total Component Count: 18 Pieces (Consisting of 12 distinct hole saw cutters + 6 installation arbors/accessories)

• Application Capability: Clean cylindrical boring through structural steel, iron, wood, drywall, and plastic resins

• Arbor Interface Design: Heavy-duty Hex Shanks to prevent chuck slippage under high-torque drilling loads  

Master Kit Layout & Sizes

1. Plumber’s Module (AKH0091 Component Pack)

• 6 x Bi-Metal Hole Saws (Metric & Imperial sizes):

• 19 mm (3/4")  

• 22 mm (7/8")

• 29 mm (1-1/8")

• 38 mm (1-1/2")

• 44 mm (1-3/4")

• 57 mm (2-1/4")

• 1 x Small Arbor: 3/8" Hex Shank (Fits smaller hole saw sizes from 9/16" to 1-3/16")  

• 1 x Large Arbor: 7/16" Hex Shank (Fits larger hole saw sizes from 1-1/4" to 8-17/64")  

• 1 x Thread Adapter: 1/2-20 internal threads to fit 5/8-18 hole saw thread steps  

2. Electrician’s Module (AKH0092 Component Pack)

• 6 x Bi-Metal Hole Saws (Metric & Imperial sizes):

• 22 mm (7/8")  

• 29 mm (1-1/8")  

• 35 mm (1-3/8")

• 44 mm (1-3/4")

• 51 mm (2")

• 64 mm (2-1/2")  

• 1 x Small Arbor: 3/8" Hex Shank  

• 1 x Large Arbor: 7/16" Hex Shank  

• 1 x Thread Adapter: 1/2-20 to 5/8-18 thread pitch step  

Packaging & Organization

• Storage Environment: Organized inside an industrial-grade, heavy-duty molded plastic carry case featuring dedicated snap-lock tool slots for every cutter and arbor assembly to ensure complete component protection.