PEN-VAC Kit With 8 Probes & Cups – 5- 3/4″ (146mm) Silver Aluminum Body – Five bent probes – 1/8″ (3.18mm), 1/4″ (6.35mm), 3/16″ (4.76mm), 3/8″ (9.53mm), 1/2″ (12.7mm), Three straight probes 1/4″ (6.35mm), 3/8″ (9.53mm), 1/2″ (12.7mm)Static Dissipative