Hoop Drill This solid iron croquet hoop drill is used for drilling the croquet hoops into the ground in croquet. You simply use this, in conjunction with our Smasher mallet to make the holes in your croquet court & then put the croquet hoops in the holes this croquet hoop has made. Please ensure the areas the hoops are inserted are watered, & that you do not use your croquet mallet to hammer the hoops in, as this may cause damage to both your hoops & your mallet.