PoolTone™ Blue LED Bulb 12V MR16 2 Pin for Hayward® Astrolite II® Halogen Upgrade houzz then this is the kit

then this is the kit you need

Dimensions are:

Pentair Aqualight

The front of the fixture looks like the picture below

This kit provides a double layer of protection for underwater installation

PoolTone™ Blue LED Bulb 12V MR16 2 Pin for Hayward® Astrolite II® Halogen Upgrade houzz then this is the kitSpecifically designed for the 12 Volt 2 Pin MR16 75 Watt Astrolite II Light Fixture Brightest available blue LED bulb available on the market Specifications: Volts 12VAC Watts 5 Connector MR16 aka 2 pin Our Bulbs are about TWO Times as Bright as OEM Hayward and Pentair Color LED's We recommend installing a new Hayward Silicon Gasket Purchase Hayward Spa Gasket Here Light needs to be water tight after installation, bulb is not water proof so a fresh