Product features:

The color of sleeves is black nylon.But it can also be changed according to customers' requirements.
These serial products can be automatically locked with a certain constructure according to customers' requirements.
These serial products have many patents.Please don't imitate them.

The applicable range:
It has been applied in DIY,charging type electric drill.

                                                                                                                                            update: May. 20, 2011