Introduction: Overhand, Overhand Stopper Knot
A very easy to tie stopper is essentially two overhand knots
Step 1:
Make a bight and tie first overhand knot
Step 2:
Bring left hand strand over the bight
Step 3:
Bring right hand strand under the bight
Step 4:
Bring the uppermost strand down through the right hand bight
Step 5:
And bring other strand up through its bight
Step 6:
Bring the right hand strand up through the small bight of the first overhand knot
Step 7:
And bring the left hand strand down through the other bight
Step 8:
Grab the loop in one hand and the two strands in the other hand and pull apart. Adjust to tighten