TongSheng TSDZ2 36V Mid Drive Crank Electric Bike Conversion kit. Item supplied as per picture, no instructions so will suit competent person who understands how to fit, unsure if complete. Where additional packaging is required or the original not available, we will recycle and reuse other packaging materials, this helps the environment whilst keeping costs down. We reserve the right to record serial numbers or security mark certain items or components to prevent fraud.