Replacement Fluorescent Bulb 10W-70mm ID Older Model Semi-Square With 4 Pins Reliable All major components in steel

All major components in steel (aluminum stand)

Exclusive BioSpring® adjustable return spring reduces tension and lessens hand fatigue

Well-balanced set for students

Model Durston 1052 Double D4 Roll Size 158 mm × 60 mm Roller Type Combination Sheet Thickness Capacity 6 mm Maximum Wire Capacity 10 mm Wire Grooves 19 square grooves

making it a reliable tool for cleaning

Replacement Fluorescent Bulb 10W-70mm ID Older Model Semi-Square With 4 Pins Reliable All major components in steelThis replacement fluorescent bulb is designed for older model OttoSetters microscopes sold prior to 2002. Featuring a semi square mount with four pins, this bulb measures 3 1 4" in diameter and is rated at 10W with a 70mm inner diameter. If your bench microscope is showing its age and the original bulb has burned out, this is the correct replacement to restore proper illumination to your workstation. Features Designed for older OttoSetters microscope