STEELMAN 12100 Bend-A-Light Pro Replacement Bulb Replacement bulb for the STEELMAN 11" Mini Bend-A-Light Pro: Part Number 16102 Replacement bulb for the STEELMAN 16" Bend-A-Light Pro: Part Number 10150A Bulb is 5/32 inch in diameter Approximately 4 hours of continuous burn time High intensity bulb that provides bright light in tight spaces