Roto folding crank handle used with 5/16 inch Hex spline
Plastic hex base crank handle folds after cranking window open or closed
The spline is a six sided hexagon, designed to snap onto a hexagon fitting in casement or awning window operators.
Used on Roto brand hardware, mainly vinyl awning and casement windows.
Available colors: White or Tan
Sold Each, Priced each

Roto Replacement Operator Parts-
570003 - Left hand, new style
570004 - Right hand, new style
570010 - Standard Hex Handle
570014 - Folding Hex Handle