1.SL version feautures a perfect bulb seat

2. High gloss powder coat finish used which resists damage

3. SL version has the cable mounted on the base as per original

4. SL versions are perfect high gloss finish

Inferior versions can often be discoloured and with screw heads displayed

Inferior versions are easily marked and often arrive damaged

Inferior versions have the cable protruding straight up from base in an ugly way

Inferior versions appear dull and are easily chipped