Roto Pro-Drive split arm casement window operator
The Roto Pro-Drive operator has a hole where the handle fits. ( X-Drive has a Protruding Spline)
Pro-Drive is limited to existing inventory

Operator Type:  8 inch Split Arm Operator
Base Type: Thin, primarily vinyl windows
Pin Position: Down 
Handed: Yes, As Shown
Material: Corrosion Resistant Steel (CRS) 
Colors: Dark Brown, Almond, White, or Blue White
Markings: Base Number: OP051505 Right,  OP051506 Left, Arm Link Number: OP052020
Sold as Shown, Operator only, No Screws or Handle

Related Roto Hardware:
OP05-7811 - Roto Pro Drive Folding crank handle

Important - Part numbers are printed on bottom of operators, To be sure you get correct part, remove operator and check number on bottom.