Silicone rubber-coated monofilament for MCAO model. Filament size 6-0, diameter 0.09-0.11 mm, length 20 mm; diameter with coating 0.21 +/- 0.02 mm, suitable for MCAO models in animals within body weight range 22 +/- 2 grams; coating length 3-4 mm, more suitable for skilled surgeons doing longer (>60 min) MCAO followed by reperfusion. Pack of 10 filaments.