Estes Argent on a CTI F59. This combo definitely works better on a 9 second delay; did a 7 here and it was too soon. Chute Release did EXACTLY what it was supposed to. From t' ground, it looked like a fouled chute until .... t' chute unfurled perfectly and let t' rocket down gently. Arrr! Such a good product! http://jollylogic.com for details