Main-Driver® is a user-friendly tool fitted either with a comfortable monolithic handle or an easy-to-use quick-connect feature, designed for one-time use. Main-Driver® works with various attachments (like AO, 1/4"-Square, Zimmer, Hudson, etc.) and can include different bits needed for your surgery and procedures. The Main-Driver® kit is sterile and can be packaged with the bits you need or provided separately by Mainstream.