10 miniature sprung test contact probe concave head P13-1123 0.7mm x 17mm spring

You get a pack of 10  miniature sprung test contact probe with a concave head the diameter of the wider part of the shaft is about 0.7mm and the sprung part is about 0.5mm  the outside diameter of the probe end contact is about 0.85mm the total length is about 16.7mm and the total length when the end is pushed in is about 13.9mm.