I bought a dozen last year for night time hog hunts here in Texas, man they are sweet!! But way costly....

You can make your own!!!!! A whole lot cheaper.. here's how

Go down to your local fishing tackle store and buy some Thill Lights, cost about 1.00 a peice, next get you a drill bitf just a tad bigger than your thill light and drill a small hole from the bottom of your nock till it just comes out where your string will be .. Then insert the Thill light, push it flush with the inside nock edge where you string will go and put a very small amount of super glue on the light part (nowhere else) let it dry and presto you have a homemade lighted nock... when you get ready to shot it just pull your knck out and press the light on and reinsert you nock and line it up, your ready to go ...