ITEM NAME:1PC 2 in 1 15/16mm Spanner Bike Bicycle Pedals Bottom Bracket Ring Wrench To FT Features: 1. Spanner is used to remove or tighten bike pedals and lock rings. 2. 15mm/16mm spanner, also double ended design, convenient to use. 3. Perfect tool for cycling enthusiast. Specification:.Spanner is used to remove or tighten bike pedals and lock rings. 15mm/16mm spanner, also double ended design, convenient to use.