Specifications: Made of high-quality aluminum alloy with CNC precision processing and surface anodized treatment, these tool set are very durable, wear-resistant, and not easy to rust. When pressed in, only the outer ring contacts the bearing sleeve, which can effectively protect the bearing from wear. Suitable for press-in installation of hubs, freehubs, bottom brackets, and frame pivot bearings. Item Name: Wheel Hub Bearing Tools Material: Aluminum Alloy Specifications: 20 Pairs of Blocks Corresponding to the Applicable Bearing Labels include 6800-Pair, 6801-Pair, 6802-Pair, 6803-Pair, 6804-Pair, 6805-Pair, 6900-Pair, 6901-Pair, 6902-Pair, 6903-Pair, 6000-Pair, 6001-Pair, 6002-Pair, 608-Pair, 609-Pair, R6-Pair, R8-Pair, 688-Pair, 699-Pair, 15267-Pair Features: Durable, Portable, Anti-Rust, Wear-Resistant Box Size: 33cm x 27.5cm x 8.2cm/12.99" x 10.83" x 3.23" (Approx.) Handle Size: 157mm x 41mm x 21mm/6.18" x 1.64" x 0.83" (Approx.) Sleeve: 70mm x Φ31mm/2.76" x Φ1.22" (Approx.) Guide Tube Size: Φ8,Φ9,Φ10,Φ12,Φ15,Φ17,Φ20,Φ25 (Approx.) Stainless Steel Screw Rod Size: 165mm*Φ5mm/6.49" x Φ0.2", 245mm*Φ5mm/9.65"x 0.2" (Approx.) Package Includes: 20 Pairs of Blocks 8 x Guide Tubes 2 x Handles 1 x Socket Sleeve 2 x Stainless Steel Screws