Fitment: The front bumper fillers are compatible with 1981-1987 Buick Regal 2 Dr, Grand National, T-Type. Notes: 1981-1983 front fillers will need to be trimmed for correct fit ABS Plastic & Painted: Front bumper filler is made of ABS plastic, ABS plastic is lightweight and durable. Painted surface finish ensure this bumper fillers more hard-wearing and long-lasting performance. Color: Black Function: Front bumper fillers have depressions where holes are to be drilled (see photo). It also enhance the structural strength of the bumper and absord the overall impact force of the vehicle Installation: Use screws to install this front bumper fillers. Professional installation is highly recommended Package: Include 4pcs bumper fillers. Instruction and hardware is not included Fitment: The front bumper fillers are compatible with 1981-1987 Buick Regal 2 Dr, Grand National, T-Type. Notes: 1981-1983 front fillers will need to be trimmed for correct fit ABS Plastic & Painted: Front bumper filler is made of ABS plastic, ABS plastic is lightweight and durable. Painted surface finish ensure this bumper fillers more hard-wearing and long-lasting performance. Color: Black Function: Front bumper fillers have depressions where holes are to be drilled (see photo). It also enhance the structural strength of the bumper and absord the overall impact force of the vehicle Installation: Use screws to install this front bumper fillers. Professional installation is highly recommended Package: Include 4pcs bumper fillers. Instruction and hardware is not included