Features:
* Emery particles: using hard emery particles, the drilling is neat/smooth/no broken edges
*Even and full sand grains: and wear-resistant/not easy to clog/accelerate chip removal, increase drilling speed, and effectively improve work efficiency
* Complete specifications, and: specifications 0.8MM-2.5MM, increase drilling speed, effectively improve work efficiency
* Applicable models: jade carving machine, high-speed jade carving machine, hanging mill, electric mill
*Scope of application: Suitable for engraving/drilling/polishing of jade/amber/beeswax/glass, etc.

Specification:
Product name: Extended corundum jade punching needle
Material: wear-resistant emery
Shape: cylindrical grinding head
Specifications: 0.8-2.5MM
Particle size: 80 mesh
Shank diameter: 2.35MM
Sand length: 15mm
Quantity: 30pcs
Applicable models: jade carving machine, high-speed jade carving machine, hanging mill, electric mill

Packing list:
30*Jade punch needle

Please note the following when using diamond tools
1. It must be cooled with water (resemblance dripping devices like hospital drips), such as dry drills, the diamond on the tool head will be graphitized due to overheating and will soon wear out and be scrapped.
2. When drilling, try to avoid shaking, because shaking will cause local damage to the tool and accelerate the damage of the entire tool.
3. Speed as high as possible. Generally, the line speed is not lower than 10 meters per second.
4. Feed with light pressure. Diamond tools process workpieces by grinding. If excessive force is used, the grinding powder is not easy to remove, and the tools (especially small tools) are easily damaged.

Note:
1. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness.
2. Please allow slight manual measurement deviation for the data.

We accept payment via Paypal only.

Payment must be completed within 5 days. If you have any problems about payment, please contact us via ebay message.

We only ship to confirmed Paypal addresses. Please comfirm that your paypal address is in line with your shipping address.

Please kindly note that the combined shipping is not provided because the shipping fee is calculated by weight. Also, the each additional item means exactly the the same color and size. 

It takes about 7-15 working days to UK; about 10-30 working days to other countries. Transit time may be a little delayed because of the bad weather and customs inspection. If you do not receive your item within 30 working days since payment finished, please contact us immediately for further assistance.

We strive for 100% customer satisfaction! Positive Feedback is very important to us. If you have any questions, please feel free to contact us via "Ask seller a question" . We will reply your email within 24 working hours.