You searched for "rectangular bracket"
HellermannTyton
HellermannTyton Self Adhesive Cable Tie Mount 15 mm x
Part: 901-10256
Self-adhesive cable tie mount bracket in durable polyacetal material for general use.
Raaco
Raaco Polyacetal Rod Power Drill Holder
Part: 108928
Polyacetal drill holder for organizing power tools in workshop storage systems.