U-VSG5400 / U-VSG5403 / U-VSG5405 / U-VSG5408.GRABIT STAINLESS STEEL STONE BASKET HELICAL DESIGN.MATERIAL STAINLESS STEEL HELICAL DESIGN(4 WIRES).LENGTH 90/120CMS. SIZE 3/4FR.DESIGN FOR ENDOSCOPIC MANIPULATION,DISLODGING-ENGAGING-REMOVAL OF RENAL,URETERAL STONES.