Omega Products VDI30 Multiple Square Seat Holder - Type D1Multiple Square Seat Holders Type D1 are designed to securely hold multiple inserts on a single tool holder, offering increased productivity and efficiency in machining operations. These holders feature a square shank and a precise seating surface that ensures maximum rigidity and accuracy during cutting. They are compatible with a variety of inserts, including square, diamond, round, and triangular, and are available in both right hand and left hand