Blendin Ice Crusher Blade with Replacement Jar Base Cap, 2 Rubber O Ring Sealing Ring Gaskets Combo,Fits Oster 1 High quality Stainless Steel Blade & Gasket, Replaces Part # 4961 1 Jar Base Screw Cap, Replaces Part # 4902 1 Silicone Gasket Fit most Oster Blenders that have a little square pin on top of the motor Does NOT fit Pro, Master, or Versa Models. It fits models that the outside diameter of the base of the blade is 2 3/4".