Place these clamps over the conduit and secure them to the surface with a fastener. The conduit clamp has one or two tabs with a hole in each tab for mounting.
These clamps have one tab with a hole for fastening to a surface. Use them when space is limited and the surface can only accommodate one fastener or if the additional support that a two-hole clamp provides is unnecessary.
Two mounting holes on these clamps provide more support than single-hole conduit clamps.