Estes 3158 Regular Engine Mount Kit, 3 Mounts – 19mm Mounts for BT-50, BT-55, BT-56 & BT-60 Model Rocket Tubes Tuning forks are used for

Tuning forks are used for and in scientific experiments

pin available and uncommitted

The Estes Yankee will reach altitudes of 1400 feet

Hardened steel sockets

Discover the Effects of Temperature and Raw Sewage on Water Quality

Estes 3158 Regular Engine Mount Kit, 3 Mounts – 19mm Mounts for BT-50, BT-55, BT-56 & BT-60 Model Rocket Tubes Tuning forks are used forRegular engine mounts for BT 50, 55, 56 & 60 body tubes Includes enough pieces for 3 mounts. Easy to assemble with complete instructions. Engine mount tubes are a BT20 or 0. 74 in. (19 mm) Plus can be used to make a conversion mount for lightweight D powered rockets