array of colorful safety helmets in specialized shop

array colorful safety helmets shop helmet safety industrial equipment construction protection work worker builder engineer industry background safe hat plastic head tool white protect isolated job contractor protective build hard yellow object engineering headgear architect concept maintenance business cap danger site security factory vector health hardhat wear workman architecture gear color professional occupation repair labor inspection manufacture technician employee graphic warning floor headwear workwear repairman handyman workplace renovation risk injury sport prevention service attention regulations miner underground emergency