FOUR ARM TENSION TENSIONER KNOB FEMALE 3/16”x 24tpi VARIOUS USES ie BIKE, PRAM

3/16” x 24tpi thread. Four arm knob tension tensioner various uses eg: exercise bike, pram (female type fitting). We only have these few four sided plastic tension knobs that were used on exerciser bikes, but could have various uses where you need a hand tightening facility, for applying tension or easy securing without using a spanner.

eBay