Hellion
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Among other brands. All of these mechanical brake calipers are the same, or nearly the same in operation. Can be used with nearly any diameter disc, but only up to 1/4" (6.35mm) thickness, which is why I didn't list any.
Hurst / Airheart / Tolomatic MB-1
Thomas / Knott Mfg "400282"
Comet 218070A
Rotary Corporation 488
Manco 9597
Carlisle
Various China or Taiwan clones of the above, "Grehua" brand (on Amazon), etc.
Left to Right: Airheart (with bracket), Thomas Mfg, Comet, Rotary Corp
[click to enlarge]

Note: I do not have info on how the Rotary 488 caliper is mounted. It may not be a floating caliper like the others.
Specs and Instructions from Airheart Tolomatic. Page 2 has the crucial adjustment procedure at top left:




Hurst / Airheart / Tolomatic MB-1
Thomas / Knott Mfg "400282"
Comet 218070A
Rotary Corporation 488
Manco 9597
Carlisle
Various China or Taiwan clones of the above, "Grehua" brand (on Amazon), etc.
Left to Right: Airheart (with bracket), Thomas Mfg, Comet, Rotary Corp
[click to enlarge]

Note: I do not have info on how the Rotary 488 caliper is mounted. It may not be a floating caliper like the others.
Specs and Instructions from Airheart Tolomatic. Page 2 has the crucial adjustment procedure at top left:



