1. FITMENT: Works on for B and C series crude oil engines and 5.9L liter crude oil used in pickups 2. USING:Just insert the tool into the flywheel housing until it engages the ring gear, then attach a 1/2 inch square drive ratchet or breaker bar and turn 3. FEATURES:This tool fits the flex plate teeth perfectly, and its load-bearing collar provides friction-free operation while rotating the tool in the housing - Rotating the engine is so easy Engine Barring Tool The Old Way of Using a Screwdriver or Pry Bar to Turn the Engine Over is History! High quality great tolerance and good performance Time saver:With this takes less time to turn the engine over or to turn the crank while preforming valve lash adjustment! colour:black Material:metal Package Contents: 1* for Engine Barring/Rotating Tool Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.