Drop & Drive 1/4″ Hex Bit Driver Tool w/Spring Loaded Screw Holding Sleeve #494 • Spring loaded bit adapter that guides as it drives• Guide will not only retract but will also extend back• Guide locks to easily interchange bits• Internal magnet holds bits in place• For use with power tools including impact drivers• Accepts existing, common 1/4″ hex bits Check out my other items! Be sure to add me to your favorites list! I do Combine shipping whenever possible! All you need to do is buy the items you want, then «Request the Total». I will send you an invoice with combined shipping ASAP! I check my emails often! If you need a quote for combined shipping cost feel free to email me anytime! Attn: International Buyers,All Power Tools and chargers come with a Standard 120V US Electrical Plug. All posted US shipping rates ( including Free shipping when available) applies to the Continental 48 states ONLY!For shipping to Hawaii, Alaska and other islands please email for shipping quote. Thanks, Nate’s Tools and More Warning: This product can expose you to or may contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.