39mil short test probe and receptacles Probe Mechanical& Electronical Specification Pitch 1.00mm[ 0.039in] Working Stroke 2.71mm[ 0.107in] Full Stroke 4.50mm[ 0.177in] 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& Treatment Plunger SK4 or BeCu/ Au Plated Spring Music Wire/ Au Plated Tube Bronze/ Au Plated