This Buy it Now Sale is for quantity Two NEW (2) Red Filament inline Glass Bulbs (Not LED). These are Brand New, from a OTC Pkg. This bulb will fit OTC Circuit tester Models: 3634, 3639, and 3633. These are also common to Kent-Moore, Craftsman, Snap-On, Mac Tools models as well.

Bulb size will take the guess work for You: Measures 1-1/16th inch in total Length (1.110"). The metal end caps measure 1/4" in Diameter (0.250")

Min. applied Voltage is shown in the last photo, which is 3.00 Volts DC.

The Maximum Safe applied voltage is 16.00 as shown in the 5th Photo inside the circuit Tester (NOT included).

All Bulbs have been tested here, at 12.25VDC @ 144mA, and 1.764P (Total Watts). Total Lumens is unknown. 

All Photos are our own....we Do Not use Stock Photos nor from other listings on ebay.

$3.00 Shipping to anywhere to the 50 States of the USA Only, from here in Arizona. No additional shipping for additional quantities.