Reviews : Thumler-Tru-Square Grit Pack for #100 & #102 Thumler / Tru Square Grit Pack for #100 & #102 $18.59 Leave a Rating! ★ ★ ★ ★ ★ OR Write a Review! Write a Review Sort 5-Star: 0 (0 ratings) 4-Star: 0 (0 ratings) 3-Star: 0 (0 ratings) 2-Star: 0 (0 ratings) 1-Star: 0 (0 ratings) Reviews