Chromium-Molybdenum Steel (CRMO) construction for added durability and long life</br>3-3/16" deep for longer reach and the ability to fasten over longer threads</br>Locking hole keeps the socket securely attached to the impact</br>Laser etched for easy identification</br>High strength 6-point drive sockets for Extreme torque applications</br></br>Product Description</br></br>Makita Deep Well Impact Sockets are the perfect accessory for a high torque impact wrench when taking on demanding applications like driving large lags through support beams?? setting anchors?? and removing stuck weather-rusted nuts.</br><br/>http://www.amazon.com/gp/product/B016Y3MYL4