New Inserts We produce machine-ready inserts in sizes ranging from 1/4” to 3/4” I.C. in the following shapes; Trigon, Triangle, Round, Rhombic and Positive inserts, all grades and shapes. These inserts are available in single sided CBN and PCD as well as solid CBN. All materials are Highest Quality US-made. We sell the Best inserts for Less. Triangle Shaped Inserts CBN & PCD Mini-Tips Square Shaped Inserts CBN & PCD Mini-Tips Diamond Shaped Inserts CBN & PCD Mini-Tips Full Face CBN & PCD Inserts Solid CBN Inserts