Prym Ergonomics Crochet Hook (US G-6/4.00 mm) - Comfortable Grip for Knitting & Crocheting - Perfect for Yarn Crafts, DIY Projects & Handmade Gifts

I bought the 6 mm the 5 mm and the 4 mm. The 4mm is not as smooth and seems to drag and it just doesn’t work the yard very well. I love the 6mm it glides like is is on ball bearings so slick and smooth love it, the 5 mm is OK but not as smooth as the 6 mm and it splits the yard more regularly than I like. I would perfer it never split the yarn but if it happens once in a while that’s not so bad but when it does it regularly it begins to wear on your nerves.