Quality Turnbutton fasteners with curved twist lock

Also known as common sense fasteners, turnbutton fastener, turnbuckle fastener or twisted fastener 

This range of turnbutton fasteners do work with the Genuine DOT brand too. 
The twist part is thinner and more curved along the top. 

Simple twist to lock action
Fastener is positively engaged by simply twisting the knob
Heavy duty nickel plate on brass
Different heights available