river drifting oars for river boat high quality,reasonable price Shaft tube wall thickness: 1.2mm, 1.5mmTube diameter: 32mmBlade length: 40cm in polypropylene material reinforced by ifberglassShaft: aluminum 6063 anodised treatmentSpecification: overall length 1.52m, 1.62m. Lengh could be customized as per customers' request or design.Color avaiable: black, silver river drifting oars