LAMPS & ADAPTORSCRIMPS, SLEEVE & SHRINKTRANSFORMER & DRIVERSTOOLSFIXINGSCONSUMABLESELECTRICALSSPECIALIST REPAIRPOINT OF SALESTOCK CLEANSE
10mm Opening with Securing Screw to grip tube
Works in conjunction with a tube loop and a ceiling hook. The cup is held tightly in place against the ceiling by the securing screw on its collar.