Descriptions:
Natural pig bristles and stiff and soft bristles.
Flexible wound-wire handles conform to odd shapes, galvanized steel for rust resistance.
Not just for test tubes, bristles are great for cleaning all sorts of internal surfaces.

Specification:
Product Name: Conical Flask Brush
Bristle Material: Synthetic Bristle
Handle Material: Metal
Color: Yellow, Silver Tone
Bristle Dia: 0.14mm / 0.01inch
Brush Size: 160 x 80mm / 6.3 x 3.15inch (L*D),190 x 90mm / 7.48 x 3.54inch (L*D)
Handle Size: 130 x 3.8mm / 5.12 x 0.15inch (L*D),150 x 3.8mm / 5.91 x 0.15inch (L*D)
Total Length: 290mm / 11.42inch,340mm / 13.39inch

Package Content:
2 x 250ml Conical Flask Brush
1 x 500ml Conical Flask Brush