Feature: 【Professional Seal Installation】- Specially designed to securely hold and position hub seals for precise, damage-free installation every time, saving time and preventing costly seal damage 【Fits Most Class 7 & 8 Trucks】- Compatible with all major over-the-road trucks and trailers including Freightliner, Peterbilt, Kenworth, and International models (fits 4-13/16″ to 6-5/16″ hubs) 【Complete 5-Piece Set 】- Includes all essential drivers (4-13/16″, 5-11/16″, 5-31/32″, 6″, 6-5/16″) plus handle extension for deep brake drum applications – no drum removal required .