• #10 trim head design for use with #8 trim head screws
• Pre-drill and countersink in one easy step that creates the perfect hole every time
• The Smart-Bit stop collar spins free of the drill bit, preventing marring of the deck surface
• Each Smart-Bit comes with 2 replacement drill bits
• A "must have" for any deck builder or woodworker

WARNING: This product can expose you to chemicals which is [are] 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.