I always use smaller needle size than suggested and even then I feel my fabric is too loose/hole-y, even though I try to knit very tightly : r/ knitting
Knitting Needle Conversions From Metric to US and UK sizes – KnitPal
Lykke Driftwood Single Point Knitting Needles US#7 (4.5mm) 10"
Lykke Driftwood 10 Inch Straight Knittng Needles - US 7 (4.5mm)
Circular Knitting Needles - Original Collection – Goldtipneedles