Arrow Fastener 505 T50 5/16" Flat Crown Heavy Duty Steel Staples 1250 per Package

Are these staples heavy-duty, chisel point? Thanks

will these work in a sears craftman stapler?

Will these work in powershot pro 9100?

Will these staples work in Craftsman Easy Fire 68514? I need 9-68545 replacement staples and cannot find them