322 Vacuum micromanipulator Inserts for 3000ESD housing Suction needles Suction cups Model Outside diameter Inside diameter 3303* 0.30 mm 0.16 mm .011 Inch .006 Inch 3305Z* 0.50 mm 0.25 mm .020 Inch .019 Inch 3310Z* 1.0 mm 0.65 mm .039 Inch .025 Inch Model Diameter 2052E* 4.5 mm .177 Inch Stainless-steel suction needle. Bent 45°. For working with 3200 or 3232 adapter. Silicone suction cup. For working with 3200 or 3232 adapter. *Not available in North America