RTS Transmission Flexplate, Billet 1-Piece Steel, TH350/TH700/Trimatic, For Holden 253-308 V8, 153 Tooth, SFI 29.2Fully CNC machined from high tensile aircraft True billet steel, RTS flexplates are for extreme duty applications! Their strength is incredible, enabling them to handle extreme engine builds, drivers, and road conditions. The flexplates offer the strongest gear teeth, the least runout, and best longevity on the market. Every RTS flexplate is SFI 29. 2 safety approved. Concentric machined to . 005". One piece design 100% machined. Proprietary heat