Whittet Higgins NI-09 Locknut Linear Ball Bearing Unit The 2025 Wera Advent calendar

The 2025 Wera Advent calendar includes a comprehensive screwdriving workshop for the most common screw profiles and screwdriving operations

The Whittet-Higgins MBB-15 is a heavy-duty metric bearing/shaft lockwasher — a thicker version of the standard MB series engineered for higher-load bearing and power-transmission shaft assemblies

Cuts all strands with minimal crushing or distortion

drive chains

The handle/interchangeable system in a compact design with various blade tips in a minimum of space make the user mobile and flexible

Whittet Higgins NI-09 Locknut Linear Ball Bearing Unit The 2025 Wera Advent calendarThe Whittet Higgins NI 09 is a bearing locknut from the NI series, threaded 16 threads per inch in the National Fine thread series for finer assembly adjustment and accurate angular positioning across numerous locking positions. Machined from carbon steel, it is used together with a matching WI series lockwasher, whose tab bends into a nut slot to secure, lock, and retain bearings and power transmission assemblies and to prevent loosening from