10pcs 522mm Diamond Hole Drill Bit Set Tile Ceramic Glass Porcelain Marble Drill Bits

Specifications:
Product name: Drill Bit
Material: Diamonds
: Silver
Length: Approx. 50mm/1.96"
Drilling size: 5/6/8/10/12/14/16/18/20/22mm
Quantity: 10Pcs
Feature: -100% new and high quality.
-Cut resistance is small, improve the opening speed, slotted easy to decorate, removal easily.
-Opening neat, smooth, no broken edges, will not produce tremor.
-Can be used for glass, ceramics, marble and hard and brittle materials, drilling, grinding Buddha beads, jade and so on.

-Instructions for use:
-Glass drilling device is installed in the use of ordinary hand drill (electric drill to speed better), because this hole is not the central positioning of the drill bit, be careful when operating, let the hole at a slow slow access to glass Useless side of the hole out of a crescent, and then put a bit is used to locate the crescent, so you can successfully complete the hole operation.
-Note that when the hole in the speed can not be too fast, must be slow, in the process of opening the hole must be added water cooling device.












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