German Auto Solutions M52tu-M54 Crankshaft TDC Lock Pin Precision CNC Machined from 303 Stainless Steel to OEM BMW specs. Will never rust. Same Flywheel Locking Tool that comes in our M54 Pro Cam Timing Kit. Includes 90 degree handle pin to aid insertion & removal of tool. No one else does this. 100% Designed & Manufactured in the USA. Limited Lifetime Warranty.