Included: (1) Bosch 2610993582 Nut Genuine OEM Quality: Ensures perfect fit, reliable performance, and extended tool life for your Bosch router, backed by original manufacturer standards. Enhanced Bit Security: Provides crucial stability for router bits, reducing vibration and promoting precise, clean cuts for all your woodworking tasks. Broad Compatibility: Essential replacement part for popular Bosch router models including 1617, 1617EVS, 1618, 1618EVS, and more, restoring peak functionality. Durable & Dependable: Constructed from high-quality materials for maximum durability and sustained reliability under demanding workshop conditions.