Optimized for use with the Kreg Jig HD and 1-1/2" and larger stock. Screws provide incredible shear resistance and have a Protec-Kote finish with three anti-corrosion layers for long term moisture resistance. Thread Diameter: #14 Length: 2-1/2 In. Head Type: Washer Finish: Protec-Kote Material: Steel Type: Pocket Hole Screw Grade: Warning: This product can expose you to chemicals including Formaldehyde, which is known to the State of California to cause cancer. For more information go to www.P65Warnings.ca.gov. -