The Mack and Peterbilt 3 Hole Pattern Installation Kit is a practical and versatile product designed for easy installation. With a textured black finish, it adds a sleek and stylish touch to your vehicle. This kit features a 3-hole bolt pattern and is compatible with all Mack models (pre-1950, shaft size 1 1/8 inch) and Peterbilt (pre-1972) CEO fixed; (pre-1974) conv. fixed. Sold individually, this installation kit offers a reliable and durable solution for your vehicle needs.