Abstract: A two-component staple fiber finish is disclosed which renders polyester staple fiber having low to normal modulus and tenacity-at-break fit for "100%" open end spinning. A synthetic fiber having from about 0.08 to about 0.15 weight percent, based on the total weight of the fiber, of a primary finish comprising(a) from 25 to 85 weight percent of at least one alkyl phosphate ester salt, and(b) from 15 to 75 weight percent of a second component selected from the group consisting of quaternary trialkyl ethyl ammonium ethosulfate salts and the reaction products of polyoxyethylene ethers and C.sub.8 -C.sub.22 fatty acids is claimed.The use of a secondary lubricant to enhance the carding and drawing characteristics of the staple fiber is also disclosed.