Bimetal hole saws

The hole saw set group brings together 12 hole saw kit references for electricians, plumbers, installers and machine shops. Two material lines are clearly separated: the 0278 line uses HSS steel with 8% cobalt, the 0712 line uses HSS M3 high-speed steel. The number of pieces per set ranges from 7 to 21, with arbors and pilot drills depending on the configuration, and blade diameters spanning from small sizes for electrical junction boxes up to large sizes for drain pipes and recessed ceiling lights.

The range includes 0278-002S, 0278-005S, 0278-008S, 0278-009S, 0712-002, 0712-005, 0712-008, 0712-009, 0712-010 and the CIMCO ELEKTRO-TOP 207400 set, along with the individual reference 0278- when a single blade needs replacing. The content below covers blade material, configurations by trade, size ranges and points to note when choosing. The FERVI sets are imported from Italy and distributed as genuine goods.

The hole saw set group gathers hole saw kits used by electricians, plumbers, installers and machine shops. The group currently has 12 references, most of them FERVI branded and imported from Italy, plus one CIMCO ELEKTRO-TOP set. The kits are split into two main material lines. The 0278 line uses HSS steel with an 8% cobalt content, intended for cutting harder materials.

The 0712 line uses HSS M3 high-speed steel, aimed at everyday installation and repair work. The number of pieces per set ranges from 7 to 21, with arbors and pilot drills depending on the configuration. Blade diameters cover a wide span, from small sizes for electrical junction boxes to large sizes for drain pipes and recessed ceiling lights. This page groups the references 0278-002S, 0278-005S, 0278-008S, 0278-009S, 0712-002, 0712-005, 0712-008, 0712-009, 0712-010 and 207400.

In addition to complete kits, the range also offers the individual reference 0278- for replacing single blades. Grouping by trade shortens comparison time. Each reference states the number of pieces, the blade material and the corresponding group of materials to be cut. The content below covers, in turn, blade material, configurations by trade, size ranges and a few points to note when buying.

Blade material and material groups to be cut

The blade material determines the range of materials that can be cut. Within this group, two types of high-speed steel are used. The first is HSS with 8% cobalt, found in the 0278 line. The second is HSS M3, found in the 0712 line. Both are described as offering wear resistance and durability when cutting. Buyers should check the workpiece material before choosing the appropriate line.

The 8% cobalt line includes 0278-002S, 0278-005S, 0278-008S and 0278-009S. The manufacturer's description states cutting capability on steel, stainless steel, aluminium, non-ferrous alloys, plastic, plexiglass, wood and drywall. The cobalt content is noted as increasing durability and the ability to cut through hard materials. This is the direction to choose when the work frequently involves sheet metal.

The HSS M3 line includes 0712-002, 0712-005, 0712-008, 0712-009 and 0712-010. These sets are also described as cutting steel, stainless steel, aluminium, non-ferrous alloys and plastic. In particular, 0712-010 is classed as an industrial kit with 21 pieces. The large number of blades covers many diameters in a single preparation.

Configurations by trade

The sets in this range are named after the trade that uses them. This naming reflects the combination of diameters inside the case. Electricians need holes for flush-mounted boxes and lights. Plumbers need holes for supply and drain pipes. Installers need a wider range to handle many different items. The section below is split into three main trade directions.

Reference 0278-002S carries the name "ELECTRICIAN KIT" and comprises 9 pieces. The blades are made of HSS steel with 8% cobalt, with 7 sizes from 22 mm to 64 mm. This range covers the holes commonly encountered when running junction boxes and flush-mounted devices. CIMCO's 207400 takes a different approach, focusing on three fixed diameters.

The ELEKTRO-TOP set 207400 comprises three hole saws with diameters of 35 mm, 68 mm and 75 mm. The set also includes an edge countersink for the 68 mm size, with two specially hardened cutting teeth. The shank uses two driving pins, corresponding to CIMCO item no. 20 7584. An HSS pilot drill is included according to the manufacturer's description. This configuration suits work that repeats around a few fixed hole sizes.

Sets for plumbers and installers

Reference 0278-008S is called the "PLUMBER SET" and contains 9 HSS 8% cobalt hole saw blades. The equivalent version in M3 high-speed steel is 0712-008, also with 9 pieces. In addition, 0712-002 has 9 pieces in HSS M3 and is described for the plumbing repair trade. These three references form a parallel set of options based on blade material.

For general installation work, 0278-009S comprises 13 hole saws in 8% cobalt, in sizes from 19 mm to 64 mm. The corresponding HSS M3 version is 0712-009, named "INSTALLER SET" and also comprising 13 blades. This reference is supplied with a dedicated carrying case according to the description. The larger number of blades reduces how often sizes must be added when a site involves many hole sizes.

Reference 0278-005S comprises 7 HSS 8% cobalt blades, aimed at repair work. The description states saw sizes starting from 22 mm. The HSS M3 version with the same piece count is 0712-005, comprising 7 items imported from Italy. These two references are more compact than the 13- or 21-piece kits and suit lower hole-cutting frequency.

For workshop and industrial use, 0712-010 comprises 21 pieces in HSS M3 high-speed steel. The set is described for cutting round holes in many types of material. When single blades need to be added, reference 0278- supplies metal hole saw blades in the 14–152 mm range, in HSS 8% cobalt M42. This makes it possible to replace exactly the worn size without buying a whole set again.

How to choose according to your needs

The first step is to identify the main workpiece material. If the work frequently involves stainless steel and sheet steel, give priority to the 0278 line with 8% cobalt. If the work is mainly installation on plastic, wood, drywall and thin metal, the 0712 HSS M3 line covers the described scope. The next step is to count how many hole sizes are actually needed in one work shift.

From the number of hole sizes, choose the corresponding set capacity. Seven pieces for compact needs, nine pieces for electrical or plumbing trades, thirteen pieces for multi-item installation. The 21-piece kit serves workshops with a wide diameter range. Finally, plan for replacement blades in the most frequently used sizes, checking against the 14–152 mm range of the individual reference.

Choosing a hole saw set according to workpiece material, number of hole sizes and trade shortens comparison time. See the details of each reference in this product group to check the piece count and size range before ordering.