MKM Tools RL107 6 cm Big 'V' Grooves Design Self Hardening Clay You simply roll the HR

You simply roll the HR roller with your hand across the clay or up the wall of a pot to create a beautiful pattern

6" posts and 12 - 4" posts that are 1-3/4" wide

there is no gain in drying properties (the most common reason for adding grog to clay bodies)

which prevents glaze from sticking to the shelves

Chemical Formula:  CuSO4·5H2O

MKM Tools RL107 6 cm Big 'V' Grooves Design Self Hardening Clay You simply roll the HRRL Large Handle Rollers have a rolling design face that is 6 cm (2. 4 inch) across. The Large Handle Rollers are designed to roll across clay or other soft media to create patterns along straight lines, curvy lines, and borders. For best results, we recommend using the RH 1 Handle with the RL Roller.