Star CYD/ER MF Single & Double End Cylindrical Toolholders / Sleeves Specifications below for (5): Star - "5", 4 And 3/4 Inch, CYD/ER MF Double End Cylindrical Shank Toolholder / Collet Sleeves - Part Number 42127-00 - With Adapters, ER Collet Clamping Nuts, And Collets Star - "2", 5 And 1/2 Inch, CYD/ER MF Double End Cylindrical Shank Holder/ Collet Sleeves - Part Number (A) 301-23-00 - With ER Hex Nuts And Collets Star - "1", 4 And 1/4 Inch, CYD/ER MF Double End Cylindrical Shank Toolholder / Collet Sleeve - Part Number 2622.21 54.102 - With Adapter and ER Collet Clamping Nut Star - "1", 5 Inch CYL/RD Single End Cylindrical Shank Toolholder / Collet Sleeve-With Adapter, ER Collet Clamping Nut And Collet Star - "1", 4 Inch, ER Single End Cylindrical Shank Toolholder / Collet Sleeve - With Adapter And ER Hex Nut Lot 13