SP Air Corporation SP-7770 1/4-Inch Rotational Head Ratchet Wrench Adjustable head in 90 degree angle increments Built- in air regulator and 360 degree swivel air inlet Ball type socket retainer for positive retention 360 degree rotating rear exhaust deflector Durable and compact design for use in tight spaces Adjustable head in 90 degree angle increments Built- in air regulator and 360 degree swivel air inlet Ball typre socket retainer for positive retention 360 degree rotating rear exhaust deflector Durable and compact design for use in tight spaces