This is a 1mm aluminum muffler gasket for OS & YS .46~.55 glow engines (6pcs/bag).
Bolt hole spacing: 38mm
Perfect gaskets- couldn't get a decent seal between an os 50 hyper and my hatori pipe, so experimented making my own paper gaskets, card gaskets, even a genuine cylinder head gasket cut to shape, but nothing works like a proper soft alloy one. Perfect seal, and robust.Looks good but have not use it yet. Waiting for engine.Otimo produto e qualidade, recomendo.very practical for your engine nitro, they have to have them in your toolbox, you never know when you needGood product for moneyI am going to try it in Asp 52.Super vfukove tesnenia pre heli motori, konecne vyrieen problm povolovania skrutiek, tesnenie si po pr tartoch pekne sadne a u sa nepovoluje.