The TRP-1013 BB Chrysler Valve Spring Tool is built for big block Chrysler engines with shaft-mounted rocker systems. Designed to manage the high spring pressures found in serious performance builds, it provides the control and durability you need without bending or twisting under load. With its detachable handle, the TRP-1013 BB Chrysler Valve Spring Tool allows you to remove valve springs safely while the cylinder heads remain on the engine. It compresses the spring straight down, making a normally demanding job quick, clean, and reliable. Fast Shipping, Always. We keep our tools in stock and ready to go, shipping most orders the same day or the next business day. If something is listed as out of stock, it will be replenished and ready to ship within about 2 weeks.