Features: 1. Application: Compatible with 2017-later Buick LaCrosse, Enclave, Chevrolet Cruze, Equinox, Malibu, Traverse, GMC Terrain & Buick Verano. 2. Material: Crafted from quality carbon steel, high strength, anti-wear, rust resistance, anti-oxidation, sturdy and durable. 3. Function: Used to compress the 1-2-3-4 piston and the retaining ring simultaneously into the piston bore of the 6T40 transaxle. 4. Package Includes: DT-47799 Tool Kit consists of a Piston Compressor Tool DT-47799-1 and a DT-47799-2 Retaining Ring Guide. .