Susan Bates Silvalume Crochet Hook Set. These Hooks Have The Broadest Size Range Within The Susan Bates Family Of Hooks. Made Of Lightweight Aluminum, Each Silvalume Hook Undergoes A Special Anodizing Process That Etches Away All Surface Impurities. In Addition, Each Hook Is Heat Treated For Strength And Durability And Polished For A Velvety Smooth Finish. Each Size Is Color Coded So You Can Find The Size You Need At A Glance. Our Famous In Line Head Helps Reduce Wrist Motion For Fatigue Free Crocheting And Helps You Maintain A More Consistent Gauge. The 7X3 1/2X1/4In Vinyl Case Is Perfect To Store Your Hooks Safely. This Set Includes Sizes Us F5, G6, H8, I9, J10 And K10.5 (3.75Mm, 4Mm, 5Mm, 5.5Mm, 6Mm And 6.5Mm). Imported.