https://www.mccoys.com/shop/p/3404183-052303-18/jandorf-60148-lamp-reducer-brass
60148 Lamp Reducer, Brass
Sku: 3404183-052303-18
$2.77
7 Available at
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Specialty Lighting Accessories:Jandorf 60148 Lamp Reducer
Connects nipples of different sizes.
Specifications
3/8 in M x 1/8 in F
Material
Brass