***NOT A PROFESSIONAL GRADE PEEKER***
Professional grade peekers require special decks and cost hundreds of dollars.
This is a simple device that uses mirrors to show you what the card is. 
3D printed with tough black resin.

I tested this peeker / peeper with JUMBO Bicycle cards.
It also works with standard/poker sized cards: Bicycle, Theory 11, and Artisan decks.
It should work with most poker size decks.

This is designed to show the dealer in blackjack what the turned down card is to check for a blackjack.
The use of this device requires overhead lighting.
This is for home games or for teaching.

Installation: 
Two black screws are included (see pics).
This will require a rectangle hole cut into the table (approx. 1" x 1 9/16" or 26mm x 38mm).
It is also recommended that you mark and predrill the screw holes with a 3/32 drill bit.
HAND TIGHTEN the screws to prevent warping/cracking from overtightening.