Product Description Probe Mechanical& Electronical Specification Pitch 1.00mm[ 0.039in] Working Stroke 4.25mm[ 0.167in] Full Stroke 6.35mm[ 0.250in] Spring Force 1N 1.5N Resistance Max.50mOhm Current 3Amp Operated Temperature -40~125�°C Drilling Hole Size 0.780-0.805mm [.0307-.0317in] Probe Material and Treatment Plunger SK4 or BeCu/ Au Plated Spring Music Wire/ Au Plated Tube Bronze/ Au Plated