these are square, but not flat. so they will work on projects with large surface area. however, thinner material could slip in the groove.
Material: engineering plastic Weight: 160g High hardness engineering plastics with high hardness and durability Quickly measure the right angle mold, quickly make the workpiece frame right angle frame right angle corner and other workpieces
Dimensions and Weight
Product weight: 0.1500 kg Package weight: 0.1600 kg