Kool stop more shop tool sized, This is the VAR tire jack
Of fiber reinforced nylon, .. I snagged several in the 80's
the molded in tire lever shown on the right end typically breaks off .. so I supplement it with additional tire levers ..
and for thin tight tires I bring 2, using them like I used to use my hands , bringing them together while pushing the tire bead
over the edge of the rim.
Often set 3 tire levers, all used at once to get the tires off. at 100+ psi , a tight tire is a good thing,,
..