The Snap-On Light Lens will fit handpieces which are laser printed with the serial number, while the original LED light lens will fit on handpieces without the serial number on the bottom of the unit. The new Snap On Light Shield will fit both the original and the modified versions of the Coltolux® LED Curing Light. In addition, the new amber light shield is now autoclavable and will last a minimum of 50 autoclave cycles.