Features: Enhancing your physics experiment with our 12PCS Screw Bulb Socket Lamp Holder, designed for various screw bulb and ensuring safety and reliability in laboratory setting. Crafted from pp and brass, these screw lamp bulb holder is heat resistant and maintain their shape under high temperature, featuring compact size that allows for easy installation without the need for professional tool. Very suitable for researcher, laboratory technicians, teacher, student and educational institution lab managers who requires dependable and versatile electrical experiment supplies. Widely use for scientific laboratories as part of lighting equipment installations or for conducting light source tests during school experimental class. This essential teaching instrument supports hands on learning and enhances understanding of electrical concept, making it essential addition to any physics laboratory setup. Specifications: Color: Green Component: PP; Metal Size: Approx. 6.7x3.50cm/2.63x1.37in Weight: Approx. 156g Package Includes: 12Pieces Screw Bulb Socket Lamp Holder note: 1.Please allow 0-1cm error due to manual measurement. Be sure you donot mind before bid. 2.Due to difference between different monitors, the picture may not reflect the actual color