Extended diamond sand needle is a professional drilling tool commonly used for drilling low density, moderately hard wood or plastic. It is mainly composed of a high-speed steel substrate and a diamond sand coating on the surface. It is a highly efficient drilling tool that is not easy to bend or deform, and is used in various materials and fields, including metal, non-metal and other materials.

Brand: Dongju

Model: Electroplating binder

Material: Diamond

Category: Coating

Specification: 2.55D * 4T * 190L * 2.5B SDC120P

Length: 190mm

Weight: 50g

Grinding head diameter: 2.55mm

Shank diameter: 2.5mm

Grinding head length: 4mm

Concentricity: 0.1

Particle size: 120#

Customized: Yes

Imported or not: No

Origin: Dongguan

Function and purpose: for punching holes

Scope of application: Made of punched wood or PET plastic materials