- 30 PC. 1/2" DR. Cup Type Oil Filter Wrench Set - 1/2" square drive - Withstands up to 115.2 N?m (85 ft?lb) - Coated with electro-black oxide finish for rust protection - Cup-type design wrench reduces the possibility of damaging filters - Suitable for use with 3/8" or 1/2" DR. tools