Using a J 6mm hook will substitute perfectly if you do not have a 5.75mm J hook.

Gauge:
12 hdc x 8 rows =4”
Row 1: Ch 13, hdc in 2nd chain from hook and across, turn (12) Rows 2-8: ch 1, hdc in first st and in each st across, turn (12)

3/20/20: This pattern is available as free download for 24 hours with a coupon code that can be found here