Specification:
No. 1 extended needle, the total length is 122mm, the length of the grinding head is 50mm, and the diameter of the reaming hole is 0.7-3.12mm.
No. 2 ultra-fine needle, the total length is 107mm, the length of the grinding head is 30mm, and the diameter of the reaming hole is 0.6-1.66mm.
No. 3 grinding needle, total length 91mm, grinding head length 10mm, reaming diameter 0.7-4.7mm.
No. 4 umbrella needle, total length 88mm, grinding head length 10mm, reaming diameter 1.0-4.9mm.
A set of 4 pieces Net weight: about 24 grams. Packed in pvc bags
The surface is coated with diamond super-sharp abrasives, which can expand holes quickly and greatly improve work efficiency.
The handle is made of ABS plastic, which is ergonomically designed. Comfortable to hold.
Reminder: This file is a reaming needle, not a perforating needle, it can only ream the hole, not drill it! ! It is suitable for reaming the holes of beads or jadeware/wenwan that have already been drilled, or objects that are blocked by glue or the like. Use this product to twist and expand a little, not suitable for direct drilling. It is recommended to put some water when turning the text to play with the hole of the jade, because the jade will be easily cracked due to the friction of the turning hole. When expanding the hole, twist it vertically, not sideways, so as not to cause the needle to break.
Uses: It can be used for reaming of Wenwan, beads, pearls, crystals and jade.