Can I use these for a ramp at a 7 degree angle.

Thank you for the question. We would not have a recommendation for using the Enhance railing in a ramp application. Signature horizontal railing can be used on a ramp up to approximately 10° angle using stair swivel brackets. Rod rail horizontal assembly will rack about 18 degrees but should also use the stair swivel brackets. Please note the verticals or baluster holes may need to be slightly bored out or angled to ensure a good fit. Transcend railing meets all major building codes for use as a guardrail system, however, most localities require a graspable handrail on ramp applications. Ramps generally only have a slight angle, so the horizontal infill kit is recommended to use with ramp applications. In some cases, the baluster spacer holes may need to be trimmed slightly to allow for the fit of the balusters. Using a jigsaw or a Dremel rotary tool to trim the spacers out will be acceptable if necessary. The use of stair components is not recommended for ramp applications. The brackets will not meet the general angles of a ramp application, and the baluster spacer will likely cause the balusters to be too loose and fall out.