Inclusion Criteria:  50 patients with ASA grade I to II, posted for open inguinal hernia surgery, elective , 18 to 60 years old , will be included in double blinded randomized study.  Exclusion Criteria:  Patient refusal Patient with significant neurological , psychiatric or neuromuscular disease. Pregnancy or lactating women. Suspected Coagulopathy . Morbid obesity. Known allergy to some medications . Septicaemia and local infection at the block site . Alcoholism . Drug abuse