Size 6, 4.00 mm, Before the 20th century fine knitting was done on steel knitting needles but bone was the material of choice for coarse knitting.
Bamboo knitting needles 5 needles in a pack
Clover 10 Takumi Bamboo Knitting Double Pointed 7 Size, Amethyst, 5 Count
4 French Antique Double Pointed Bone Knitting Needles 2.25 cm Size
Orders that include $75 in needle and/or crochet hook purchases ship free within the USA., Made of strong birch wood, the Lykke Driftwood needles are
Lykke Driftwood 10 Inch Straight Knitting Needles - US 10.5 (6.5mm)
Brittany Double Point Knitting Needles, 10 inches Long , Wood, Set
Double Pointed Knitting Needles at WEBS
Boye Doublepoint Knitting Needles Set of 5-US 6/4.25mm
Set includes (5) aluminum knitting needles These metal knitting needles are US size 5 (3.75mm) and measure 7 inches long. Designed for knitting
Boye 7-Inch Aluminum Double Point Knitting Needles, Size 5
Orders that include $75 in needle and/or crochet hook purchases ship free within the USA., Made of strong birch wood, the Lykke Driftwood needles are
Lykke Driftwood 6 Inch Double Pointed Knitting Needles - US 1.5 (2.5mm)
Knitting Needles 101 - Magda Makes
Knitting Needle Types, Materials and Styles
Bone Knitting Needles
Knitting Needles 7 4 50 Mm
Jumbo Basix Double Point Needles (size 50, 8) — ImagiKnit
Size 6 10 Double Pointed Bone Knitting Needles - Wm. Booth, Draper
DOUBLE POINTED NEEDLE SET: A beautiful set of wooden Knit Picks double pointed knitting needles in 6 sizes with 6 needles included per size NEEDLE
Knit Picks Double Pointed Wood Knitting Needle Set (Caspian 6)