Professional designs to be compatible with Oster Compatible with Osterizer Blenders. Fits for Models: 6628, 6630, 6631, 6632, 6633, 6634, 6635, 6636, 6640, 6641, 6642, 6643, 6644, 6645, 6646, 6647, 6648, 6652, 6653, 6654, 6655, 6656, 6657, 6658, 6662, 6663, 6664, 6665, 6667, 6668, 6672, 6673, 6674, 6675, 6676, 6677, 6678, 6679, 6680, 6681, 6684, 6686, 6687, 6688, 6689, 6692, 6696, Fits for Models: 4100-8, 4102, 4101-8, 4165-8, 4106-8, 4108-8, 4109, 4110, 4111, 4112-8, 4114, 4115, 4117, 4125, 4126, 4127, 4128, 4129-0, 4132, 4134. Made from stainless steel, these drive studs are resistant to corrosion and wear, providing long-lasting durability even with frequent blender use. Size: 1.8cm x 0.6cm x 0.6cm, Please confirm the product size carefully. These drive pin studs are simple to replace, allowing users to maintain their blender's functionality without needing professional assistance, perfect for quick DIY repairs., Manufacturer: The Lord of the Tools