Description:

9pcs M42 Drilling Hole Saw Cutting Kit Opener Hole Saw Set For Aluminum Iron Sheet Pipe Plastic Wood Heavy Duty Ceramic Drill Bit Cutter

Features:

Double metal hole with high quality M42 material, durable, not easy to fall off the edge.
Widely used in plate hole, home wood, galvanized pipe, fire pipe, plastic, gypsum board and other opening operation.
Applicable to the pistol drill, bench drill, vertical drilling machine etc..
The precision of the concentric degree, so that the teeth edge of the uniform, to extend the life of the hole.

Specification:

Material: M42 hss steel
Size:16mm, 18mm, 20mm, 22mm, 25mm, 30mm, 32mm, 35mm, 38mm
(5/8-Inch,45/64-Inch,25/32-Inch,55/64-Inch,1-Inch,1-3/16-Inch,1-1/4-Inch,1-3/8-Inch,1-1/2-Inch)

Package Included:

9* M42 Drilling Hole Saw

Usage Suggestion:

Hole saw may become overheated and get damaged or even burned up due to fast rotary friction, we suggest customers to use
cutting fluid to keep the hole saw cold during usage.
Keep the drill be stable when drilling, otherwise the centre bit may get snapped due to excessive shaking.
Start drilling with a slow drill rotary speed, or the centre bit may be shattered on first use.
The larger the hole saw is, the slower the drill rotary speed should be, this way can protect the centre bit from getting snapped.