Park Tool BBT-9 Bottom Bracket Tool – 16-Notch 44mm OD FREE shipping within Australia over AU$200.00 In stock. Available via Click and Collect or Buy Online Share Loading Facebook Like button... Park Tool BBT-9 Bottom Bracket Tool – 16-Notch 44mm OD FREE shipping within Australia over AU$200.00 In stock. Available via Click and Collect or Buy Online Share Loading Facebook Like button...