Extreme Max 5001.5472 96-Stud Track Pack with Round Backers, 1.40" Stud Length Platinum Plus Studs & Nuts - The stud that works smarter and harder with a radius shoulder design and full 1.00" head; Made from hardened stainless steel and a race-grade 80 Degree carbide insert tip; Also includes a full set of Extreme Locking nuts Round Aluminum Backers - Premium heat-treated aluminum, 0.140" thick, formed into a 1-3/8" diameter round backer with a perfect 1/4" profile; Round design minimizes risk of track tearing Torque Wrench & Track Drill - Simplify stud installation with the high-quality materials, ergonomic features, and customized design of these tools Track Template for 2.52 Pitch Track - Single-use track template for the most commonly used track style; Aggressive stud patterns for both single and double backer installations Two-year full-replacement warranty on track drill, studs, nuts, and backers