Set of Inner Cam Bearing Puller and Installation Tools. Compatible with Harley Davidson 1986 to Present Single Cam EVO Evolution that use the B138 bearings. Function: This set is specifically designed for removing and installing the inner cam bearings on the newer model Single Cam EVO Harleys. The Set includes a 0.812-inch Driver with Internal Thread. This Driver threads onto the bolt and is used to install the inner cam bearing B-138. We also have new Torrington-Koyo B-138 bearings available in our store! This kit contains a High Strength Steel Hex Head Bolt Grade 8. This screw is at least 25 % stronger than medium-strength steel screws. Zinc yellow- chromate plated steel screws resist corrosion in wet environments. Material: This inner bearing Installation tool set is made of high-quality 1045 cold rolled steel, which is sturdy and durable. Tool Comes with Black Oxide Coating for Years of Use. This tool is professionally made in the USA on the state of the art CNC equipment with 100% quality inspection. Package Includes: One set of inner cam bearing installer & puller tools (as shown on picture). We offer combined shipping services. All our tools are made from high quality materials and are designed for long life durability and ease of use. Set of Inner Cam Bearing Puller and Installation Tools. Compatible with Harley Davidson 1986 to Present Single Cam EVO Evolution that use the B138 bearings. Function: This set is specifically designed for removing and installing the inner cam bearings on the newer model Single Cam EVO Harleys. The Set includes a 0.812-inch Driver with Internal Thread. This Driver threads onto the bolt and is used to install the inner cam bearing B-138. We also have new Torrington-Koyo B-138 bearings available in our store! This kit contains a High Strength Steel Hex Head Bolt Grade 8. This screw is at least 25 % stronger than medium-strength steel screws. Zinc yellow- chromate plated steel screws resist corrosion in wet environments. Material: This inner bearing Installation tool set is made of 1045 cold rolled steel, which is sturdy and durable. Tool Comes with Black Oxide Coating for Years of Use. This tool is professionally made in the USA on the state of the art CNC equipment with 100% quality inspection. Package Includes: One set of inner cam bearing installer & puller tools (as shown on picture) We offer combined shipping services. All our tools are made from high quality materials and are designed for long life durability and ease of use.