Item Type: Alignment Tool Kit Material: Metal Package Include: 8 x Spigot Adaptors: 047in., 055in., 059in., 063in., 067in., 07in., 075in., 078in. 12mm(, 14mm, 15mm, 16mm, 17mm, 18mm, 19mm, 20mm) 3 x Expanding Mandrels: 059in075in.-., 078in105in09in142in.-.,.-. 15( 19- mm, 20 266-. mm, 23 36- mm) Steps: Step 1: , insert tool into disc. sure is facing correct direction. tool should stick all way through spines on disc. Step 2: Then place on flywheel, and engage alignment tool into bushing or bearing in center of crankshaft. Push tight to flywheel. Step 3: With on flywheel, install pressure plate to flywheel and start . Step 4: Wiggle alignment tool to sure it is fully engaged and seated in bushing and bearing. Tighten pressure plate in a criss pattern and then to spec. Tip: Before insert tool into disc, please choose a suitable adaptor size to fit bearing and connect with expanding mandrel. alignment tool stays in until you are to install . While pressure place should hold from moving, dont' take of pulling tool out too soon. Once is to install, pull tool out, and slide into place. Package List： 1 x Alignment Tool Kit11PCS1() x Box