You will need
  • Shoulder straps, sprockets, awl, ruler.
Instruction
1
Take up the shoulder straps. With a ruler measure the distance from the lower edge of the ring to the center of the sprocket. There will be a hole. Make a mark.
2
The awl pierces a hole in the marked place. Insert the sprocket and fasten it on the pursuit.
3
Repeat the operation for the following stars.
4
Finished with single shoulder strap, similar to fasten the sprocket on the second.