If you can tell what this is?

756380

{"replyTo":"","text":"I'm jelly.","replyToPid":0}

289718

{"replyTo":"

599477 发表于 2019-12-13 17:01:02 Whoa! Do those really work?

","text":"yes we had them on the ambulances and fire trucks but they tend to freeze up and don't work","replyToPid":281108}

366847

{"replyTo":"","text":"Worth their weight in gold","replyToPid":0}

791878

{"replyTo":"","text":"Chain chuckers. \n\nThey work well enough for city’s in the mountains to put them on school busses and transit busses","replyToPid":0}