What is the Low Angle Rebate Block Plane used for?
It is an essential tool for making joinery, particularly dealing with end grain, e.g. tenon shoulders. Because the edge the blade matches the edge of the tool, planning at 90 degrees is similar to using a shoulder plane whilst the tool can also be used to trimming the end of boards just like a block plane.
The Luban brand is manufactured by the Qiangsheng Tool Company, also known as Quangsheng, who are well known for producing very high-quality tools (including the well-regarded Wood River).
Since its market debut, the Luban brand has created a stir with its wonderful combination of high-quality products (at par with established premium brands) and affordable prices.
Below, you can see a detailed walk-through of a Qiangsheng Luban rebate block plane: