Industry News 6L80/6L90 3-5/Reverse Drum Check Tool Advertisement ByBrendan Baker on February 3, 2021 The 6L80/6L90 3-5/Reverse Drum Check Tool (p/n T45555-LEAK) from Whatever It Takes (WIT) allows you to air check the weld on the drum for cracks. It is made of billet aluminum and includes a set of sealing rings. For more, visit www.wittrans.com.Advertisement Advertisement In this article:6L80, 6L90, GM, Products, Whatever It Takes Transmission Parts (WIT) Industry News: Pep Boys to Award $100,000 in Scholarships to Aspiring Automotive Technicians Industry News: GM Genuine Parts Unveils New Logos, Expands ACDelco OE Parts on Vehicles Industry News: ProTorque Names Director of Motorsports and Sales Industry News: CVC Celebrates 25th Anniversary Advertisement WEBINARS Watch a webinar for free on-demand! E-MAGAZINE Read the most recent edition of Transmission Digest. SUBSCRIBE Stay up to date by signing up for Transmission Digest newsletters.