ITEM NAME:Plastic Snooker Billiards Position Marker Billiard Supplies for Ball 52 mm #gib Store Home Promotion Hot Item Add to Fav.Suit for Pool Billiards (2 1/4" pool balls ). Just place the marker behind the ball whilst in play and clean away any dust or dirt. 1 X Ball Position Marker. Pet Supplies. With its help, the white cue ball can be placed back exactly where it was after being chalked.