VEVOR Wrought Iron Handrail, Fit 1 or 2 Steps Outdoor Stair Railing, Adjustable Front Porch Hand Rail, Black Transitional Hand Railings for Concrete Steps or Wooden Stairs with Installation Kit

Hello, this adjustable wrought iron handrail for 1 or 2 steps is compatible with Yorkshire stone steps. The package comes with special masonry drill bits and expansion screws. You only need to drill holes normally for firm mounting on hard Yorkshire stone.

No, you can't fix to concrete blocks forming stairs. 2 bolts aren't adequate.