for direct connection Festool pneumatic sander to air duct comp. (without aspir.) Use Main applications IAS 3 SD and flex tube. air comp. DL (497215) p. paint finish c. eccentric sander air comp. LEX 3 77 P. function. Festool air comp machines without aspiration powder, p. ex. in finish Compatible with IAS 3 (LEX 3) and IAS 2 (LEX 2 and LRS) interface The IAS and the lodging. simple flex tube. air comp. allow fast work and time saving