?Function?Fengone Stair Treads Gauge Template Tool for measurement and modification layouts it can help you obtain the exact length and angle of your tread quickly, installing stair treads more efficient ?Quality Material?The Stair Tread Template Tool made of quality stainless steel, which is durable and rust-free that can be long-term use ?Easy to Use?Our Stair Tread Jig can be used for stairs, risers, shelving, windowsills, closets, and cabinets, it can be rotated from 0° to 300°it is also easy when you are measuring irregular stairs. save your time ?Flexible Combination ?The Stair Tread Tool includes two sets of extension parts with a length of 16'' (No.A), 12'' (No.B) and 8''(No.C) adjustable range is 11"-60" just adjust 4 knobs to easily change. you can free to match as you see fit ?Quality Guarantee?1 x Stair Treads Gauge Template Tool (Blue). If you have any questions about our Shelf Scribe Tool for Stairs, please feel free to contact us We will give you a satisfactory solution