Rust-Proof and Durable: Constructed from high-hardness steel, our internal bearing puller set is designed to withstand heavy use without deformation. Components like pins, U-shaped counterstay, and screw adapters undergo heat treatment for enhanced hardness. The slide hammer puller set is coated with high-quality anti-rust material, making it resistant to wear, tear, and corrosion from chemical oil. High-Temperature Quenched Collets: Crafted from Cr40 steel and subjected to high-temperature quenching, our collects resist wear and deformation. The wheel bearing removal tools can withstand heavy hammer impacts and the working load between fastening bearings, ensuring durability. Expandable Collets: With 10 collects to cover a wide range of bearing sizes, our inner internal bearing removal tool set ensures a snug fit by allowing slight expansion via pin bolt tightening. This secure fit prevents loosening during sliding hammer operations, reducing the risk of failure. Dual Operation Modes: This blind bearing puller set provides two versatile disassembly methods: the sliding hammer and the U-shaped counterstay. Utilizes the 3.1 lbs sliding hammer for efficient removal through inertia, while the U-shaped counterstay is ideal for pulling bearings from narrow and small spaces. 16 PCS Bearing Removal Set: Our 16-piece slide hammer puller tool kit is a complete package equipped with 10 collects, 3 screw adapters, a sliding hammer kit, a U-shaped counterstay, and a M10 pin bolt. It effectively removes tight and stuck parts ranging from 1/4 to 2-1/3 inches (6-59 mm) in size.