8 x 1 1/4 Inches. T25. Ideal for decking and exterior wood projects; No pre-drilling; Tan color complements treated wood and cedar projects; Recommended for treated lumber. Free bit! No strip star drive. Countersinking nibs. Serrated threads reduce drive torque. Fast start self drill point prevents splitting. Lifetime guarantee: Limited lifetime warranty against rust and corrosion. www.hillmangroup.com. www.P65Warnings.ca.gov. See www.hillmangroup.com for product warranty information. Made in Taiwan.