Crompton Lamps 40W T9 Fluorescent Circular 4 Pin Light Bulbs | Cool White 4000K | Energy Efficient Tube | Long-Lasting 10,000 Hours | GR10q Base for Magnifiers & Ceiling Lights

Bright, Cool White Illumination - These T9 circular fluorescent light tubes deliver a crisp 4000K cool white output, providing clear, bright lighting ideal for detailed tasks and precision work. Long-Lasting Performance - This durable 22W fluorescent tube lasts up to 10,000 hours, reducing the need for frequent replacements, making it ideal for workspaces, offices, and commercial settings. Easy 4-Pin Installation - Fitted with a GR10q 4-pin square push-fit base, ensuring quick and secure installation in compatible inspection lamps, magnifiers, and circular ceiling lights. Professional-Grade Lighting - Ideal for magnifying lamps, medical inspections, beauty salons, and detailed craftsmanship, these cool white fluorescent lights ensures even, shadow-free lighting. Energy-Efficient & Flicker-Free - Triphosphor technology ensures bright, stable lighting with CRI >80, reducing flicker and making it a great upgrade from older fluorescent or neon tubes.