This mitre box helps you to create cuts at the correct angle by holding your saw in the selected angle it doesnt matter if you are making straight or mitre cuts this saw guide will help you to get the optimum results the lockable arm will ensure precise cuts from 0 45 from the right and 45 0 from the left features maximum height of the workpiece 50 mm maximum width of the workpiece 500 mm fits all circular saws up to 260 mm base size l x w x h 630 x 395 x 50 mm