These heatsinks are designed for use with NEMA 17 motors.
|Dimensions||42 mm x 42 mm x 12 mm (L x W x D)|
|Surface treatment||Anodized black|
While these heatinks have all four holes for mounting, most screw heads will not fully recess between the fins. This can be remedied with a few washers and a M3 screw 8-10mm longer as long as the screw is not overtightened.