Step Boring Bar with Diamond-Shaped Insert

Scientific Cutting Tools’ Step Boring Bars with diamond-shaped inserts are engineered for precise multi-diameter boring operations in tight spaces. With a minimum bore size of 0.220 inches, these tools are ideal for applications requiring both clearance and rigidity. Featuring premium micrograin carbide bodies and heat-treated steel heads, they deliver excellent chip evacuation and repeatability. Designed to hold 80° diamond inserts, these bars are available with optional coolant-through capability and are compatible with flat top or chipbreaker-style inserts. Each bar includes one insert screw and one insert key. Inserts are sold separately. Whether you're boring, facing, or profiling multiple diameters in one setup, SCT's step boring bars are built to perform.