Internal diameter of 115x83mm. This adapter is suitable for driving 4x3" rectangle posts.
Use a 6mm hex key to unscrew the 8 bolts & locking washers. Slide the current tube off the base of the Post Driver. Slide the new Adapter into its place and attach using the same bolts and washers. Remember to use a Locking Compound on the screw threads to stop them vibrating out.
Get the best results from your Easy Petrol Post Driver by using an adapter with the closest fit to your post sizes. Adapters are available for the Easy Petrol Post Driver in all shapes & sizes within 107mm round diameter. Custom sizes are available, please contact us for more information.