they have different kind of straps but the one on the right has what they call plumer's tape, the onen the left is using a real water heater connections some heavy duty straps and lag bolts , easy to put in. $15.99. it will save you a lot of time and aggravation and may prevent your water heater from falling over and starting a fire. >> when there is an earthquake, you know where your best water source is even if there's no water pressure. you've got a 50 gal water heater, you're going to be drinking the water out of your water heater. you want that standing up. that's 50 gals of water in addition to any other water you supply. the other issue is if these fal over and you don't have a gas valve which we'll talk about later, it's a great way to burn your house do. >> let's talk about that now. we have two here. >> this one is a pressure valve if you break the gas line, it detects a drop in pressure and turns off. so this doesn't go off in an earthquake. this goes when you break something. the one i have in any house is one of these that goes on the other side of the meter. what they ar