3/8" diameter by 1/2" deep hole Drill holes on the underside of the counterpoint, approximately 1/2” from edge of the sink fo be installed, Holes should be evenly spaced approximately 47 1687 apart stating from every comer as shown Below, Counter top l Anchor a Bracket “Summit?” | Rastafarian Option 1. insert anchors under the counter top on the drilled holes, so they dre ready To fasten ne sink longs, Anchors should be inserted-with o hammer unfit flush. Option 2.