This is (50) 880nm OSRAM SFH485P LEDs which are the most popular LED to use if you don't want to buy the 850nm LED reel. It is recommended that you space the LEDs 1 inch (about 2.5cm) apart from each other. Drilling holes in the acrylic is not recommended as it changes the angle that the light enters the acrylic and is more work than it is beneficial.





Specifications:
Wavelength: 880 nm
Beam Angle: 40 deg
Radiant Intensity: 3.15 mW/sr
Maximum Forward Current: 100 mA
Maximum Power Dissipation: 200 mW
Operating Voltage: 1.5 V

Included:
50 880nm OSRAM SFH485P LEDs

These LEDs are not tested by me since they come straight from my supplier. You may find one or two not working. These items are non-refundable due to the nature of their fragility if wired incorrectly.