8128 slotThe Singapore Pools 4D number 8128 is drawn, on average, every 837 days. The Singapore Pools 4D number 8128 is drawn, on average, every 313 draws. The Singapore Pools 4DPB 8128 Slot Electronic screwdriver, with turnable head for better handling. Sizes 0.8-40, 1.0-40, 1.2-40, 1.5-40, 1.8-60, 2-60, 2.5-80, 3-80,