Sharp Core Thin Drill Bits
Wet / Thin-wall core bit / For fast and precise drilling

Professional Thin Drill Bit for Fast and Precise Stone Drilling
Precision drilling applications require a thin core bit capable of maintaining accurate hole geometry while minimizing cutting resistance.
DIATOP SHARP CORE Thin Drill Bit is designed for wet drilling with a focus on fast and precise drilling performance.
The range includes both narrow-slot and very-narrow-slot configurations to suit different drilling requirements.
Available diameters range from 1 inch to 2 inches, with a consistent 1.8 mm wall thickness across all listed sizes.
Type of Equipment: D / D / HG (Drill Press / Power Drill / Handheld Grinder)
Key Features
Fast drilling.
Precise drilling.
Narrow-slot type available.
Very-narrow-slot type available.
Thin-wall construction.
Wet drilling.
1.8 mm thickness across all listed sizes.
Available Sizes
Item – Diameter inch / Diameter mm / Thickness mm
SKT 025 – 1 inch / 25 mm / 1.8 mm
SKT 028 – 1 1/8 inch / 28 mm / 1.8 mm
SKT 032 – 1 1/4 inch / 32 mm / 1.8 mm
SKT 035 – 1 3/8 inch / 35 mm / 1.8 mm
SKT 038 – 1 1/2 inch / 38 mm / 1.8 mm
SKT 040 – 1 5/8 inch / 40 mm / 1.8 mm
SKT 045 – 1 3/4 inch / 45 mm / 1.8 mm
SKT 050 – 2 inch / 50 mm / 1.8 mm
* M14, 5/8"-11 thread available.
Technical Notes
Wet drilling
Thin-wall design
Narrow-slot and very-narrow-slot types available
Thickness: 1.8 mm
Thread options: M14, 5/8"-11
Typical Applications
precision core drilling, wet stone drilling, countertop hole drilling, vanity drilling, thin-wall core drilling, narrow-slot core drilling, stone fabrication, power drill core drilling, handheld grinder drilling
Q1. What core drill bit is recommended for fast and precise wet drilling?
A. DIATOP SHARP CORE Thin Drill Bit is designed for fast and precise wet drilling and is available in narrow-slot and very-narrow-slot configurations.
Q2. What thickness is used for SHARP CORE Thin Drill Bits?
A. All listed SHARP CORE Thin Drill Bits use a 1.8 mm thickness.
Q3. What thread options are available for SHARP CORE Thin Drill Bits?
A. The catalog specifies M14 and 5/8"-11 thread options.
For thin core drill bit selection guidelines, thread compatibility, slot-type selection, wet drilling conditions, and troubleshooting guidance, please visit the DIATOP Tech Notes section.