Bobs Machine Shops convertable manual MJ5 jack plate is actually 4 units in one! It can be 2.5" setback or 5" setback. And it can have a straight or negative 6 degree wedge.
They are anodized black for race oriented looks. Easy adjustments are made on the side of the jack plate.
2 1/2 inch offset no wedge
A feature which is used on the lightest of boats. Allowing the engine to be raised to its maximum height without putting the weight of the engine too far behind the transom which could create too much bow lift.
2 1/2 inch Offset with Negative 6-Degree Wedge This design can be used when the transom of a boat is too steep of an angle to allow the outboard motor to perform properly. For example: an 18-degree transom when this design is applied.
5-inch Offset No Wedge
This option desirability will vary from one boat to another depending upon weight and length of boat. Some outboard motors have a limited trim angle and the 6-degree wedge may not allow for enough bow lift. By setting the plate at the no wedge design, it will give maximum bow lift.