2PCS red massage handle price of 2.4 yuan each 120PCS

PCS US flag handle bag or card price 3.4 & nbsp; & nbsp; 120 sets of each piece

10PCS two-color wear heart handle & nbsp; 8.3 & nbsp; & nbsp; 60 sets of each piece

6PCS red piercing handle hanging bag price $ 2.8 /

10PCS blue and black color stripes handle card price 7.8 yuan & nbsp; & nbsp; 60 sets of each piece

4PCS color handle dual card price & nbsp; 2.6 yuan & nbsp; 120 sets of each piece

6PCS trumpet yellow striped handle price of 2.6 yuan & nbsp; & nbsp; 120 sets of each piece

3PCS transparent wear handle dual-use screwdriver card price of 2.7 yuan & nbsp; & nbsp; 120 sets of each piece

4PCS transparent handle handle dual-use screwdriver card price of 3.5 yuan & nbsp; & nbsp; 120 sets of each piece

7PCS through the heart of the handle hanging 310 grams price of 4.7 yuan 410 grams price of 5.8 yuan / 60 sets of each piece

4PCS Mini Coloring Screwdriver 2.1 & nbsp; & nbsp; 120set

1. Handle is insulating material, high temperature, anti-oxidation, strength. Friction, easy to slip, longer life.

2, Arbor using high-quality chrome vanadium steel manufacturing, through-type rod, high hardness, torque, full hard quenching, durable.
3, hardness: 53-55 degrees, with a strong magnetic surface plating two layers of chromium layer of nickel
4, rust performance than ordinary screw batch 3 times
5, handle the design of special bumps to effectively prevent sliding, the surface selection of special resin, anti-oil corrosion 6 & nbsp;
6, handle color can be replaced according to customer requirements. Product guests above the guests printed LOGO.

A: technical principles

Second: the historical process

The slot of the screw is used from the machine. It is impossible to replace the screws on the old machine. Phillips screwdriver can not be used in the word slot, the word slot screw is still in production applications, so to keep the word screwdriver. In this way, most of the new machines are cross-slotted screws, the old is still in use, there is a situation with the use of two screwdriver.

Three: basic functions

& Nbsp; Repair the phone, open the case need to use a screwdriver (some phone shell is a buckle line without a screwdriver). And the use of screws mostly with hexagon screws; different phones have different specifications, generally T5, T6, T7, T8 and several other models are also equipped with special screws, need a dedicated screwdriver. Also need to prepare some small word, small plum screwdriver. In the selection of such tools, you can choose A, B sets of approved, it almost includes all the phone's open shell tool. When opening the case, use the appropriate screwdriver according to the type and size of the fixing screw on the case. If the selection is not appropriate, it may screw the screw groove flat, resulting in slippery phenomenon.

Four: the main species

1, ordinary screwdriver

It is easy to prepare, as long as it can be used out, but because the screws have a lot of different lengths and thickness, and sometimes need to prepare a lot of different screwdriver.
2, combined screwdriver
A screwdriver head and handle separate screwdriver, to install different types of screws, just replace the screw head can be, do not need to bring a lot of screwdriver. The advantage is to save space, but easy to lose screw head.
3, electric screwdriver
Electric screwdriver, as the name suggests is to replace the motor with electric motor to install and remove the screw, usually a combination of screwdriver.

Head type

Hex HEXAGONAL

Five: making material

The quality of the screwdriver is the use of relatively high hardness of the spring steel to do. A good screwdriver should be hard and not brittle, tough in toughness. When the screw head open bald slippery when you can hammer the screwdriver, the screw groove tick deep, easy to screw the screw, the screwdriver to be unscathed; screwdriver is often used to pry things, it requires a certain toughness is not Not bent. In general, hope that the hardness of the screwdriver head is greater than HRC60, not rust.