Are these CHEAP rail guide SQUARES any good?

20:13
6 tools from China. OK, they are cheap, but are they any good?

13:01
Is this the best Combination T-ruler in the market? Hooked On Wood edition!

19:26
Track Saw Square Comparison //TSO Products//Bench Dogs UK//Woodpeckers Tools//Insta Rail Square

22:04
This tool should be in every workshop. WOODWORKING | BANGGOOD

11:41
Using & Calibrating The RIDICULOUSLY Cheap BANGGOOD PARALLEL GUIDES - Don't Miss this - Vid#79

17:11
Making An MFT Top - No CNC, No Guide Jigs

17:02
The most impressive China Tools, double 11 edition

14:40