Frame variants for the bag Hydro 2.1 Whisper wheel with ball bearing Ø 25 cm grey Art-Nr. 167-036-22 red Art-Nr. 167-036-72 black Art-Nr. 167-036-82 blue Art-Nr. 167-036-92 Pneumatic wheel with ball bearing Ø 25 cm grey Art-Nr. 162-036-22 red Art-Nr. 162-036-72 black Art-Nr. 162-036-82 blue Art-Nr. 162-036-92 Pneumatic wheel with ball bearing Ø 29 cm grey Art-Nr. 165-036-22 red Art-Nr. 165-036-72 black Art-Nr. 165-036-82 blue Art-Nr. 165-036-92 Whisper wheel with ball bearing Ø 29 cm grey Art-Nr. 164-036-22 red Art-Nr. 164-036-72 black Art-Nr. 164-036-82 blue Art-Nr. 164-036-92