Tuning Haus 48p pinions are lightweight, run true, and operate quietly. Starting with premium aluminum alloy, the pinions are manufactured, checked, and then hard anodized to an attractive gunmetal finish. A through-hole machined for a 3mm set screw (included) provides added durability and product life, and Tuning Haus finishes the gear with a large, easy to read size engraving. Comprehensive testing in 1/10 2WD buggies, short course trucks, and on-road cars have established their durability and performance.