The HPI Racing HPI161192 4 x 3.4 mm Top Hat Bushing 4 Piece is designed with quality and precision to deliver reliable performance. It offers durability, ease of use, and versatile application for hobbyists or professionals. Ideal for enhancing productivity, this product ensures longlasting value in everyday tasks or specialized projects. Features. Genuine HPI spare part for ensured quality, correct maintenance and easy repairs. 4 PieceSpecifications. Size 4 x 3.4 mm