Helps you maintain equal spacing's in feather edge/ close board fencing construction.   

Produces a 25mm overlap. 

Available in 3 sizes to match the common sizes of feather edge boards. 

125mm (spacer measures 100mm)

150mm  (spacer measures 125mm)

These are 3D printed out of PETG to make them extra tough. 

Bright orange in colour so helps you find it easy.