40mm Test Finger Probe for Hand-Held Blender Switch Protection and Compliance Testing | Stainless Steel IEC 60335-2-14 Test Tool Product Description The HeJin 40mm Stainless Steel Test Finger Probe is designed for testing the biased-off switch protection of hand-held blenders in accordance with IEC 60335-2-14 Clause 20.103. Featuring a Φ40mm stainless steel cylindrical probe with a hemispherical end and nylon handle, it provides a straightforward and repeatable way to verify