ITEM NAME:Freewheel 16T Tooth 34MM Single Speed Freewheel Flywheel Sprocket Description: Mainly made of durable steel. Single speed bicycle freewheel 16 teeth design. Suitable for 1/2" x 1/8". Specification: Material: Steel Outer teeth diameter: 69mm Thread Inner diameter: 34mm Thickness: 15mm Package Includes: 1 Piece 16T Single Speed Freewheel SKU: DMO0008985754024309.1 Piece 16T Single Speed Freewheel. Single speed bicycle freewheel 16 teeth design. SKU: DMO0008985754024309.