Reverse Drum Tester Kit 1Set For LS 6L80 6L90 35R/1-2-3-4 Drum Testing Tool Leaks and Cracks Checking Leaks and Cracks This tool is designed for testing the reverse drum used in LS 6L80 and 6L90 transmissions, specifically the 35R/1-2-3-4 drum.It helps detect internal cracks and leaks by enabling pressure testing of the hydraulic within the drum.To use, insert the tester into the drum and apply compressed air through the designated ports to check for air leakage, indicating potential damage.The tool is engineered to fit securely into the drum, creating an airtight seal for testing results.Avoid forcing the unit during insertion to prevent damage.This kit includes one reverse drum tester.