[Time-saving Stair Tread Tool]: Stair Tread Template Set will help you lay out stair treads, risers and shelves to perfection. accuracy and save time without paying more for mistakes. Easy to handle and adjust to the angle. Portable and simple.[Wide range of application]This stair tread template tool provides the greatest help to install stairs, it can measure the length and width of stair treads, and it can also measure the rotation angle of spiral stairs.[FLEXIBLE USE]Stair tread gauge tool with three sizes of 8 and 12 and 16 inch extension rods, and adjust from 10.2 to 53.3 inches. The 10-inch stainless steel plates on both sides have scale and angle measurement (0 to 360), which can be stretched in any combination according to your needs to meet the measurement of different corners. The stair ruler is easy to adjust and locks securely in place with four knobs.[Easy to Use]The length of the tool can be adjusted with four knobs and locked firmly in place. Insert the stair guide between two walls, securely and tighten the screws to measure the length and side angle, then use it to trace the steps or risers.Material: Stainless steelcolour: bluePackage Contents:1 x Stair tread template toolOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.