Silicone rubber-coated monofilament for MCAO model. Filament size 7-0, diameter 0.06-0.09 mm, length 20mm; diameter with coating 0.17 +/- 0.01 mm, suitable for MCAO models in animals within body weight range 15 +/- 2 grams; coating length 1-2 mm, more suitable for skilled surgeons doing longer (>60 min) MCAO followed by reperfusion. Pack of 5 filaments. Reusable.