Instruction Manual Step:

A. For the best results use a 3/8 variable speed reversible drill.
B. To load bits, push down the nose cone all the way until the ball bearing retracts.
　 Then insert the bit to the into the tool holder securely.
　 To remove the bits reverse the procedure.
C. To adjust setting depth, push the rear collar down and set to the desired depth.
　 The higher the number the deeper the screws will be driven.
D. To load, push the screw into the unit until it stays in place. Than start the drill,
　 screw has reached the set depth, it will be released automatically.

✦ Adjust the setting depth function.

✦ Converts your drill into a perfece super driver

✦ Without pre-drilling,for wood,plastic and metal

✦ Hight carton steel

✦ included 4 pcs bits (PH and Slotted)