Function:

1) Product is durable.
2) You can clearly see every locking plate in the deep hole,  the position and length of beads.
3) It  can install Various shape with a needle in the front.  and can be change any angles, it bring much convenient for driving a car lock
and testing the locking plate for make a new key in the case of no key.

Specificaion:

 1)The lens can enlarge 4 times and can move at the same time.
 2) With 2 ordinary No. five battery.
 3) Providing wholesale