Replaces Part :BLSTAC-KIT Compatible:This product is made to fit for most of Oster Osterizer Blender. Fits for Oster Blender 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, 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 Colour: as shown Material: stainless steel Package Contents: 4 x Blender Coupling Stud Slinger kit Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.