Amazon.com: Mdoker 13.8 Inch Aluminum Knitting Needles,Colored Straight Single Pointed Metal Sweater Knitting Needle for DIY Knitting Projects,Size US 4(3.5mm)
Knitting Needle Sizes and Conversion Chart (Free Printable) - Sheep and Stitch
Amazon.com: Mdoker 13.8 Inch Aluminum Knitting Needles,Colored Straight Single Pointed Metal Sweater Knitting Needle for DIY Knitting Projects,Size US 4(3.5mm)
JubileeYarn Jumbo Bamboo Knitting Needles - US 36 (20mm) - 16" long - 1 pair - Walmart.com
Amazon.com: ChiaoGoo Red Lace Circular 40 inch (102cm) Stainless Steel Knitting Needle Size US 4 (3.5mm) 7040-4
All About Needle Sizes
Amazon.com: Lykke Driftwood Driftwood Needle Tips, Interchangeable US 4 (3.5 mm), LK-Di5, Driftwood 5 Inch IC US 4 (3.5 mm) Needle
Amazon.com: Addi Olive Wood 32 inch (80cm) Circular Knitting Needles; US size 4 (3.5 mm), Made in Germany - 575-7/80/3.5