The Seco Mini-Shaft™ system consists of holders and inserts for internal turning, grooving, precision grooving, profiling, backfacing and threading. It can be used in holes as small as 8 mm (Mini-Shaft™ 08) or 11 mm (Mini-Shaft™ 11). Seco Mini-Shaft™ also features a new type of joint, with a double serration, making the connection both stable and secure. It also gives very good repeatability (+/-0.02 mm).