RS-1 Resectoscopy set including 12deg./30deg.4X302mm endoscope,Passive/Active working element,Inner sheath,Outer sheath,10PCS electrodes. Characters: 1. Clear image, wide angle,deep depth,low distortion,natural2.Made of Germany optical glass, optical fiber,fibercone ,glue 3.Sapphire cover at distal for lens protection against abrasion 4.Superior medical standardstainless steel by polishing and passavation,good looks,long lifeand againstcorrasion.